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How to Write a Literature Review | Guide, Examples, & Templates

How to Write a Literature Review | Guide, Examples, & Templates

Published on January 2, 2023 by Shona McCombes . Revised on September 11, 2023.

What is a literature review? A literature review is a survey of scholarly sources on a specific topic. It provides an overview of current knowledge, allowing you to identify relevant theories, methods, and gaps in the existing research that you can later apply to your paper, thesis, or dissertation topic .

There are five key steps to writing a literature review:

Search for relevant literature
Evaluate sources
Identify themes, debates, and gaps
Outline the structure
Write your literature review

A good literature review doesn’t just summarize sources—it analyzes, synthesizes , and critically evaluates to give a clear picture of the state of knowledge on the subject.

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What is the purpose of a literature review, examples of literature reviews, step 1 – search for relevant literature, step 2 – evaluate and select sources, step 3 – identify themes, debates, and gaps, step 4 – outline your literature review’s structure, step 5 – write your literature review, free lecture slides, other interesting articles, frequently asked questions, introduction.

Quick Run-through
Step 1 & 2

When you write a thesis , dissertation , or research paper , you will likely have to conduct a literature review to situate your research within existing knowledge. The literature review gives you a chance to:

Demonstrate your familiarity with the topic and its scholarly context
Develop a theoretical framework and methodology for your research
Position your work in relation to other researchers and theorists
Show how your research addresses a gap or contributes to a debate
Evaluate the current state of research and demonstrate your knowledge of the scholarly debates around your topic.

Writing literature reviews is a particularly important skill if you want to apply for graduate school or pursue a career in research. We’ve written a step-by-step guide that you can follow below.

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Writing literature reviews can be quite challenging! A good starting point could be to look at some examples, depending on what kind of literature review you’d like to write.

Example literature review #1: “Why Do People Migrate? A Review of the Theoretical Literature” ( Theoretical literature review about the development of economic migration theory from the 1950s to today.)
Example literature review #2: “Literature review as a research methodology: An overview and guidelines” ( Methodological literature review about interdisciplinary knowledge acquisition and production.)
Example literature review #3: “The Use of Technology in English Language Learning: A Literature Review” ( Thematic literature review about the effects of technology on language acquisition.)
Example literature review #4: “Learners’ Listening Comprehension Difficulties in English Language Learning: A Literature Review” ( Chronological literature review about how the concept of listening skills has changed over time.)

You can also check out our templates with literature review examples and sample outlines at the links below.

Download Word doc Download Google doc

Before you begin searching for literature, you need a clearly defined topic .

If you are writing the literature review section of a dissertation or research paper, you will search for literature related to your research problem and questions .

Make a list of keywords

Start by creating a list of keywords related to your research question. Include each of the key concepts or variables you’re interested in, and list any synonyms and related terms. You can add to this list as you discover new keywords in the process of your literature search.

Social media, Facebook, Instagram, Twitter, Snapchat, TikTok
Body image, self-perception, self-esteem, mental health
Generation Z, teenagers, adolescents, youth

Search for relevant sources

Use your keywords to begin searching for sources. Some useful databases to search for journals and articles include:

Your university’s library catalogue
Google Scholar
Project Muse (humanities and social sciences)
Medline (life sciences and biomedicine)
EconLit (economics)
Inspec (physics, engineering and computer science)

You can also use boolean operators to help narrow down your search.

Make sure to read the abstract to find out whether an article is relevant to your question. When you find a useful book or article, you can check the bibliography to find other relevant sources.

You likely won’t be able to read absolutely everything that has been written on your topic, so it will be necessary to evaluate which sources are most relevant to your research question.

For each publication, ask yourself:

What question or problem is the author addressing?
What are the key concepts and how are they defined?
What are the key theories, models, and methods?
Does the research use established frameworks or take an innovative approach?
What are the results and conclusions of the study?
How does the publication relate to other literature in the field? Does it confirm, add to, or challenge established knowledge?
What are the strengths and weaknesses of the research?

Make sure the sources you use are credible , and make sure you read any landmark studies and major theories in your field of research.

You can use our template to summarize and evaluate sources you’re thinking about using. Click on either button below to download.

Take notes and cite your sources

As you read, you should also begin the writing process. Take notes that you can later incorporate into the text of your literature review.

It is important to keep track of your sources with citations to avoid plagiarism . It can be helpful to make an annotated bibliography , where you compile full citation information and write a paragraph of summary and analysis for each source. This helps you remember what you read and saves time later in the process.

Receive feedback on language, structure, and formatting

Professional editors proofread and edit your paper by focusing on:

Academic style
Vague sentences
Style consistency

See an example

To begin organizing your literature review’s argument and structure, be sure you understand the connections and relationships between the sources you’ve read. Based on your reading and notes, you can look for:

Trends and patterns (in theory, method or results): do certain approaches become more or less popular over time?
Themes: what questions or concepts recur across the literature?
Debates, conflicts and contradictions: where do sources disagree?
Pivotal publications: are there any influential theories or studies that changed the direction of the field?
Gaps: what is missing from the literature? Are there weaknesses that need to be addressed?

This step will help you work out the structure of your literature review and (if applicable) show how your own research will contribute to existing knowledge.

Most research has focused on young women.
There is an increasing interest in the visual aspects of social media.
But there is still a lack of robust research on highly visual platforms like Instagram and Snapchat—this is a gap that you could address in your own research.

There are various approaches to organizing the body of a literature review. Depending on the length of your literature review, you can combine several of these strategies (for example, your overall structure might be thematic, but each theme is discussed chronologically).

Chronological

The simplest approach is to trace the development of the topic over time. However, if you choose this strategy, be careful to avoid simply listing and summarizing sources in order.

Try to analyze patterns, turning points and key debates that have shaped the direction of the field. Give your interpretation of how and why certain developments occurred.

If you have found some recurring central themes, you can organize your literature review into subsections that address different aspects of the topic.

For example, if you are reviewing literature about inequalities in migrant health outcomes, key themes might include healthcare policy, language barriers, cultural attitudes, legal status, and economic access.

Methodological

If you draw your sources from different disciplines or fields that use a variety of research methods , you might want to compare the results and conclusions that emerge from different approaches. For example:

Look at what results have emerged in qualitative versus quantitative research
Discuss how the topic has been approached by empirical versus theoretical scholarship
Divide the literature into sociological, historical, and cultural sources

Theoretical

A literature review is often the foundation for a theoretical framework . You can use it to discuss various theories, models, and definitions of key concepts.

You might argue for the relevance of a specific theoretical approach, or combine various theoretical concepts to create a framework for your research.

Like any other academic text , your literature review should have an introduction , a main body, and a conclusion . What you include in each depends on the objective of your literature review.

The introduction should clearly establish the focus and purpose of the literature review.

Depending on the length of your literature review, you might want to divide the body into subsections. You can use a subheading for each theme, time period, or methodological approach.

As you write, you can follow these tips:

Summarize and synthesize: give an overview of the main points of each source and combine them into a coherent whole
Analyze and interpret: don’t just paraphrase other researchers — add your own interpretations where possible, discussing the significance of findings in relation to the literature as a whole
Critically evaluate: mention the strengths and weaknesses of your sources
Write in well-structured paragraphs: use transition words and topic sentences to draw connections, comparisons and contrasts

In the conclusion, you should summarize the key findings you have taken from the literature and emphasize their significance.

When you’ve finished writing and revising your literature review, don’t forget to proofread thoroughly before submitting. Not a language expert? Check out Scribbr’s professional proofreading services !

This article has been adapted into lecture slides that you can use to teach your students about writing a literature review.

Scribbr slides are free to use, customize, and distribute for educational purposes.

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If you want to know more about the research process , methodology , research bias , or statistics , make sure to check out some of our other articles with explanations and examples.

Sampling methods
Simple random sampling
Stratified sampling
Cluster sampling
Likert scales
Reproducibility

Statistics

Null hypothesis
Statistical power
Probability distribution
Effect size
Poisson distribution

Research bias

Optimism bias
Cognitive bias
Implicit bias
Hawthorne effect
Anchoring bias
Explicit bias

A literature review is a survey of scholarly sources (such as books, journal articles, and theses) related to a specific topic or research question .

It is often written as part of a thesis, dissertation , or research paper , in order to situate your work in relation to existing knowledge.

There are several reasons to conduct a literature review at the beginning of a research project:

To familiarize yourself with the current state of knowledge on your topic
To ensure that you’re not just repeating what others have already done
To identify gaps in knowledge and unresolved problems that your research can address
To develop your theoretical framework and methodology
To provide an overview of the key findings and debates on the topic

Writing the literature review shows your reader how your work relates to existing research and what new insights it will contribute.

The literature review usually comes near the beginning of your thesis or dissertation . After the introduction , it grounds your research in a scholarly field and leads directly to your theoretical framework or methodology .

A literature review is a survey of credible sources on a topic, often used in dissertations , theses, and research papers . Literature reviews give an overview of knowledge on a subject, helping you identify relevant theories and methods, as well as gaps in existing research. Literature reviews are set up similarly to other academic texts , with an introduction , a main body, and a conclusion .

An annotated bibliography is a list of source references that has a short description (called an annotation ) for each of the sources. It is often assigned as part of the research process for a paper .

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CAREER FEATURE
04 December 2020
Correction 09 December 2020

How to write a superb literature review

Andy Tay is a freelance writer based in Singapore.

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Literature reviews are important resources for scientists. They provide historical context for a field while offering opinions on its future trajectory. Creating them can provide inspiration for one’s own research, as well as some practice in writing. But few scientists are trained in how to write a review — or in what constitutes an excellent one. Even picking the appropriate software to use can be an involved decision (see ‘Tools and techniques’). So Nature asked editors and working scientists with well-cited reviews for their tips.

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doi: https://doi.org/10.1038/d41586-020-03422-x

Interviews have been edited for length and clarity.

Updates & Corrections

Correction 09 December 2020 : An earlier version of the tables in this article included some incorrect details about the programs Zotero, Endnote and Manubot. These have now been corrected.

Hsing, I.-M., Xu, Y. & Zhao, W. Electroanalysis 19 , 755–768 (2007).

Article Google Scholar

Ledesma, H. A. et al. Nature Nanotechnol. 14 , 645–657 (2019).

Article PubMed Google Scholar

Brahlek, M., Koirala, N., Bansal, N. & Oh, S. Solid State Commun. 215–216 , 54–62 (2015).

Choi, Y. & Lee, S. Y. Nature Rev. Chem . https://doi.org/10.1038/s41570-020-00221-w (2020).

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five ways to structure a literature review

You’ve read. And read. And read. You’ve noted. And noted. And how. You’ve written summaries and memos. You’ve made groupings and mind-maps of the reading. But you’re still a bit away from actually writing about the literatures. You’re still not sure how to wrestle all of that material into a compliant text. You know the purposes of the literature review . But that doesn’t tell you what structure will work for your particular project.

Before you put pen to paper – or hand to mouse – it might help you to now think about the ways in which literature chapters, if you decide to have one, are most often structured. You can then see if one of the usual ways will work for you.

So here’s a set of five possibilities.

A chronology

As the name suggests, this is an historical map of the field. In writing historically, your intention is to show how your research either adds logically to what has gone before, or to show how your research challenges a taken for granted assumption in the field, or how it advances a particular body of work in the field. In doing this kind of temporal mapping, you need to highlight the key texts, groups and categories that your work is building on and/or speaking to. Even though a chronology is linear, you need to also trace threads and associations through your chosen timeline.

Major themes

You might choose to just focus on mapping the current themes or topics in the field Your intention here is to show how your research connects to, uses and adds/speaks to contemporary themes/topics. You structure the thematic review through either an examination of the kinds of questions that have been asked and the topics that have been studied, or a look at the key concepts and categories that have been developed and used, or even a look at methodological and methods that are used.

The canon/classic studies

This can be standalone, a variation on either (1) or (2) or may also appear as a subsection of either of them. Your intention in a canonic review is to show how your research fits with the studies that can’t be ignored. This kind of literatures review is always heavily evaluative and comparative, so you usually need to set out some explicit criteria, drawn from your research question, that allows you discuss specific texts in some detail. You need to make a very clear connection with your study. One of the metaphors used for this kind of literature work is a tree, where the ‘trunk’ of the discipline is its classic studies.

The wheel

Research very often draws on more than one body of literatures. These might be from different disciplines or be literatures that have been used to address very different topics. Your intention in the wheel-like review is to show that the originality of your research stems from the ways in which you’ve brought together areas that are usually kept apart. This bringing together is clearly elaborated in the discussion of literatures, where each formerly separate chunk is discussed in relation to your research interest. You need to draw out the key contributions of each corpus of literatures and their relevance to your research. You also need to show very clearly the ways in which the various spokes work together- you must show how the various spokes relate to and support the centre of the wheel – this is where your research is situated.

The pyramid

A pyramid literature review places your research in its context. Your intention is to show how your research interest is shaped and framed by other events/practices/people/policies etc. The literature review can be organised to start from the tip – what there is written about your specific topic already – and then move out and down through relevant contextualising literatures. More commonly, the pyramid is inverted, and the review begins with the wider context, honing in ever closer to your topic. The concluding tip section of the inverted pyramid review is what is written about your particular topic. By then you have indicated all of the potential issues and insights you will need to bring to your study.

There are of course variations on these five structures and various ways to combine them. You will ‘bespoke’ your literature review to fit your topic. However, if you are at a stuck point with structure it can help to simply brainstorm how you would organise your material in some or all of these ways.

It is crucial to remember that the literature review is not a summary, a description or a list! Because the literature review is always an argument about why your research is the way that it is, some play with structure will help you to think through which set of moves allow you to make the most persuasive case.

See also other posts on work with literatures .

About pat thomson

13 responses to five ways to structure a literature review.

Dear Pat, I am a great fan of your blog. I find this piece very useful.

Regards, Rakesh

I love all the posts and the shares !it enhances my little knowledge about research!! planning to have some researching! Thanks!

Reblogged this on Cecile Badenhorst and commented: Here’s a blog on writing literature reviews. I particularly liked the idea of the wheel structure.

Pingback: the blogging scramble | patter

would you please explain what the main difference is between a critical review and a systematic review? I mean how the structure of these two reviews are different. Thanks,

This is a systematic review http://eppi.ioe.ac.uk/cms/Default.aspx?tabid=67 . A critical review or narrative review is what’s usually described, see my other posts. A description of differences can be found here http://libguides.sjsu.edu/c.php?g=230370&p=1528399 .

Reblogged this on Emma .

Dear Pat, thank you so much for this blog! I’ve been coming back to it ever since my PhD 7 years ago, and it is a well of inspiration and support!

I want to ask if you may be able to point me to some resources on the ‘wheel’ model of literature review? I am writing an article which draws on several bodies of literatures, and it is a big challenge to draw them together. Thank you!

See https://libguides.unco.edu/c.php?g=236360&p=1569693 .

Using diagrams as research aides

Thank you so much!!

I’ve written you a blog post. Out tomorrow.

It’s really the same as the daisy model, see TW here https://thesiswhisperer.com/2017/02/22/using-diagrams-as-research-aides/ and

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Doing the literature review: Writing & structuring

The literature review: why?
Types of literature review
Selecting databases
Scoping search
Using a database thesaurus
Advanced search in a database
Citation information
Using a reference manager
Reporting your search strategy
Writing & structuring
When to stop
Writing and structuring
Organization of the chapter(s)
Finding your voice!
Rewriting your draft

Making a plan early in the process of designing the literature review helps to keep your writing focussed and on schedule. Researching the deadlines, resources, and constraints at university, graduate school and faculty levels will provide you with the outline of your plan. Often, scholarship providers or research funders set deadlines for the delivery of intermediate products.

In addition to planning, time management is important during the write-up of a literature review. Taking steps, one at a time, helps you to keep the pace in writing and to keep to your deadlines.

Handbooks on writing a literature review emphasise the importance of creating the right academic support environment and of assuming the right frame of mind [See selected books below in LibraryThing]. Handbooks on academic writing offer advice to less experienced authors on structure, work planning, and time management.

This module will focus on the structure of the literature review, the way in which the manuscript can be organised and on writing as a craft. Watch NSCU Libraries video tutorial Literature Reviews: An Overview for Graduate Students (9:38) starting at the section What's involved in writing a literature review? (5:26-9:38).

A literature review has a more or less predictable structure. For journal articles, the opening page usually contains information about the author(s): your association with a university or research organization, contact details, a brief description of your role or function, etc. In Ph.D. theses, chapters of roughly equal size, are preceded by front matter (title page, declaration, abstract acknowledgment, contents pages) and also followed by end matter (references and appendices).

A chapter division is tailored to the nature of the research and the research design. You may start with topics and then continue with the sequence and grouping of topics in chapters. You may opt for several smaller chapters, covering one topic each or you may prefer to combine topics into larger chapters (e.g. Introduction and Context of the study) and create fewer chapters. To arrive at comparable chapter sizes, you may later consider splitting chapters or grouping more topics into one chapter. The diagram below depicts variations of structures found in literature reviews in theses and may help you to develop your own list of topics. Under methods, the detailed explanation of your search strategy in the literature review is an important component.

For examples of literature reviews or dissertations consult the EUR & Erasmus MC Research Information Portal .

Once you have ordered the basic topics, consider how you will present the sources themselves. Choose an organizational method to focus the literature review section.

Chronological

If your review follows the chronological method, you could write about the materials according to when they were published. A chronological review will have subsections for each of the chosen time periods.

Thematic reviews of literature are organized around a topic or issue, rather than the progression of time. A thematic review will have subtopics based upon factors that relate to the theme or issue. With a review organized in this manner, you can still describe progressive time periods within each section according to the point made. e.g. geographical areas and within each area a description over a number of pre-defined time periods.

Methodological

A methodological approach focuses on the “methods” of the researcher or writer rather than that it is organized on the basis the content of the material. You could, for instance, study social integration of a minority group and compare the outcomes of studies that rely on participant observation with studies that rely on structured interviews in comparable circumstances.

Writing as a conversation

Another way to think about a literature review is as a conversation or dialogue between authors who have previously written about various aspects of your topic. A good example of a conversation is where an original article in a journal is followed by an article with an opposing view, possibly with the word 'critique' in the title, followed yet again by a 'rejoinder' or 'in response to ' written by the first author(s).

By discussing the agreements and disagreements between those authors, and illustrating what those authors have not yet talked about or researched, you create your own, critical conversation.

The task of shaping a logical and effective report of a literature review is challenging. Some useful guidance on how to approach the writing up is given by Wellington et al. (2005:87)[1]:

It should be framed by your research questions.
It must relate to your study.
It must be clear to the reader where it is going: keep signposting along the way.
Wherever possible, the original source material is to be used rather than summaries or reviews by others.
Be in control, not totally deferent to or ‘tossed about by’ previous literature.
Be selective. Ask ‘why am I including this?’
The literature review is best treated as a research project in its own right.
Engage in a dialogue with the literature, you are not just providing a summary.

The aim of finding your own voice is for the reader to reach the end of the literature review with a clear appreciation of what you are doing; why you are doing it; and how it fits in with other research in your field. Often, the literature review will end with a statement of the research question(s).

It is important to keep the focus on answers to your research questions, rather than on the literature ( Wellington 2005 ). A good, well-explained structure is of help to the author and the reader.

Since you spend a substantial part of your time writing and rewriting your manuscript, often within set deadlines, time management is of the essence. In the initial stage, you have to deal with getting the structure, balance and focus right and finding your voice. This is macro editing: dealing with the contents. As you progress from first to last draft you also move from macro editing to micro editing: dealing with the more technical aspects. Somewhere between first and last draft you should review the manuscript and check if the reader’s perspective has been considered sufficiently.

Once you have drafted your literature review it is possible for you to check how well the literature review provides answers to the (revised) research questions you have formulated.

One way of doing this is to examine each paragraph in turn and to write in the margin a very brief summary of the content, and the type of content e.g.: an argument for; an argument against; description; example; theory; link. These summaries then provide the outline of the story you are telling and the way that you are telling it. Both of these are important and need to be critically reviewed.

Writing and editing steps are repetitive. You go forward, take some distance, get a new idea and repeat some steps. What is explained here below reads as if you are always going in a forward direction. In reality, progress will at times be more complex and sometimes you need to take steps in a backward direction and apply changes, before being satisfied with the results. Asking another student, friend or colleague may also help to get feedback on clarity, the reader's impressions, and style.

What to edit in your initial drafts

At this stage, you are mainly concerned with the structure and contents of your manuscript. Some of the macro editing points are:

Did you cover the important dimensions of the academic conversation or arguments in the literature?
Is your text focussed and did you manage to demarcate your topic well?
Did you support the development of each step in your argument effectively?
Is there a balance between (mere) description and your reflections and comments?

Beware of becoming too attached to your writing. Be ready to cross out whole paragraphs or even whole sections if they do not pass the above tests. If you find that what you’ve written is not in the best order, then re-shaping it is not a huge problem. You may need to add some additional explanation and linking, a case of cutting and pasting material into a different order, to produce a more relevant and streamlined argument.

With the main structure in place, you then are able to check the flow in your draft document and check the reader's perspective.

Is the material presented in the most effective order?
Are you supporting every next element of your research question by the preceding material?
Did you explain to the reader the relevance of each piece of evidence?
Are there places where the reader is left with unanswered questions?
Is there any material that is interesting but which does not contribute to the development of the argument? (Kill your darlings!)
Upon re-reading, do you feel that you have adequately explained the justification for this research approach / topic / question?
Did you explain the chosen approach in your search strategy? Have you made clear which literature is included or excluded, and for which reasons?

What to edit when editing your later draft

At the later editing stage, you have managed to get the right structure, flow, balance and style. Only now should you concern yourself with proof editing. Some questions to consider are:

How effective are all the elements linked?
Are paragraphs following logically each other
Did you check the signposting (that signals key aspects of the work or links sentences or paragraphs)?
Are references up to date?
Is the style formatting of your manuscript systematic and consistent?
Are you a native speaker or not? Should you consider the help of an editor? What type of editor do you need (academic, linguistic, proofreading, etc.)?
The literature review: why? Why would you conduct a literature review? The process of conducting and reporting can help you clarify your own thoughts about your research topic.
EUR & Erasmus MC Research Information Portal: list of all dissertations
Strategies for writing the literature review: part of a handout by the Writing Center of UNC-Chapel Hill
Wellington (2005) Succeeding with your doctorate.
Writing as a conversation: part of a handout from the Oregon State University

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What is a Literature Review? | Guide, Template, & Examples

What is a Literature Review? | Guide, Template, & Examples

Published on 22 February 2022 by Shona McCombes . Revised on 7 June 2022.

There are five key steps to writing a literature review:

Search for relevant literature
Evaluate sources
Identify themes, debates and gaps
Outline the structure
Write your literature review

A good literature review doesn’t just summarise sources – it analyses, synthesises, and critically evaluates to give a clear picture of the state of knowledge on the subject.

Instantly correct all language mistakes in your text

Be assured that you'll submit flawless writing. Upload your document to correct all your mistakes.

Why write a literature review, examples of literature reviews, step 1: search for relevant literature, step 2: evaluate and select sources, step 3: identify themes, debates and gaps, step 4: outline your literature review’s structure, step 5: write your literature review, frequently asked questions about literature reviews, introduction.

Quick Run-through
Step 1 & 2

When you write a dissertation or thesis, you will have to conduct a literature review to situate your research within existing knowledge. The literature review gives you a chance to:

Demonstrate your familiarity with the topic and scholarly context
Develop a theoretical framework and methodology for your research
Position yourself in relation to other researchers and theorists
Show how your dissertation addresses a gap or contributes to a debate

You might also have to write a literature review as a stand-alone assignment. In this case, the purpose is to evaluate the current state of research and demonstrate your knowledge of scholarly debates around a topic.

The content will look slightly different in each case, but the process of conducting a literature review follows the same steps. We’ve written a step-by-step guide that you can follow below.

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Writing literature reviews can be quite challenging! A good starting point could be to look at some examples, depending on what kind of literature review you’d like to write.

Example literature review #1: “Why Do People Migrate? A Review of the Theoretical Literature” ( Theoretical literature review about the development of economic migration theory from the 1950s to today.)
Example literature review #2: “Literature review as a research methodology: An overview and guidelines” ( Methodological literature review about interdisciplinary knowledge acquisition and production.)
Example literature review #3: “The Use of Technology in English Language Learning: A Literature Review” ( Thematic literature review about the effects of technology on language acquisition.)
Example literature review #4: “Learners’ Listening Comprehension Difficulties in English Language Learning: A Literature Review” ( Chronological literature review about how the concept of listening skills has changed over time.)

You can also check out our templates with literature review examples and sample outlines at the links below.

Download Word doc Download Google doc

Before you begin searching for literature, you need a clearly defined topic .

If you are writing the literature review section of a dissertation or research paper, you will search for literature related to your research objectives and questions .

If you are writing a literature review as a stand-alone assignment, you will have to choose a focus and develop a central question to direct your search. Unlike a dissertation research question, this question has to be answerable without collecting original data. You should be able to answer it based only on a review of existing publications.

Make a list of keywords

Start by creating a list of keywords related to your research topic. Include each of the key concepts or variables you’re interested in, and list any synonyms and related terms. You can add to this list if you discover new keywords in the process of your literature search.

Social media, Facebook, Instagram, Twitter, Snapchat, TikTok
Body image, self-perception, self-esteem, mental health
Generation Z, teenagers, adolescents, youth

Search for relevant sources

Use your keywords to begin searching for sources. Some databases to search for journals and articles include:

Your university’s library catalogue
Google Scholar
Project Muse (humanities and social sciences)
Medline (life sciences and biomedicine)
EconLit (economics)
Inspec (physics, engineering and computer science)

You can use boolean operators to help narrow down your search:

Read the abstract to find out whether an article is relevant to your question. When you find a useful book or article, you can check the bibliography to find other relevant sources.

To identify the most important publications on your topic, take note of recurring citations. If the same authors, books or articles keep appearing in your reading, make sure to seek them out.

You probably won’t be able to read absolutely everything that has been written on the topic – you’ll have to evaluate which sources are most relevant to your questions.

For each publication, ask yourself:

What question or problem is the author addressing?
What are the key concepts and how are they defined?
What are the key theories, models and methods? Does the research use established frameworks or take an innovative approach?
What are the results and conclusions of the study?
How does the publication relate to other literature in the field? Does it confirm, add to, or challenge established knowledge?
How does the publication contribute to your understanding of the topic? What are its key insights and arguments?
What are the strengths and weaknesses of the research?

Make sure the sources you use are credible, and make sure you read any landmark studies and major theories in your field of research.

You can find out how many times an article has been cited on Google Scholar – a high citation count means the article has been influential in the field, and should certainly be included in your literature review.

The scope of your review will depend on your topic and discipline: in the sciences you usually only review recent literature, but in the humanities you might take a long historical perspective (for example, to trace how a concept has changed in meaning over time).

Remember that you can use our template to summarise and evaluate sources you’re thinking about using!

Take notes and cite your sources

As you read, you should also begin the writing process. Take notes that you can later incorporate into the text of your literature review.

It’s important to keep track of your sources with references to avoid plagiarism . It can be helpful to make an annotated bibliography, where you compile full reference information and write a paragraph of summary and analysis for each source. This helps you remember what you read and saves time later in the process.

You can use our free APA Reference Generator for quick, correct, consistent citations.

To begin organising your literature review’s argument and structure, you need to understand the connections and relationships between the sources you’ve read. Based on your reading and notes, you can look for:

Trends and patterns (in theory, method or results): do certain approaches become more or less popular over time?
Themes: what questions or concepts recur across the literature?
Debates, conflicts and contradictions: where do sources disagree?
Pivotal publications: are there any influential theories or studies that changed the direction of the field?
Gaps: what is missing from the literature? Are there weaknesses that need to be addressed?

This step will help you work out the structure of your literature review and (if applicable) show how your own research will contribute to existing knowledge.

Most research has focused on young women.
There is an increasing interest in the visual aspects of social media.
But there is still a lack of robust research on highly-visual platforms like Instagram and Snapchat – this is a gap that you could address in your own research.

There are various approaches to organising the body of a literature review. You should have a rough idea of your strategy before you start writing.

Depending on the length of your literature review, you can combine several of these strategies (for example, your overall structure might be thematic, but each theme is discussed chronologically).

Chronological

The simplest approach is to trace the development of the topic over time. However, if you choose this strategy, be careful to avoid simply listing and summarising sources in order.

Try to analyse patterns, turning points and key debates that have shaped the direction of the field. Give your interpretation of how and why certain developments occurred.

If you have found some recurring central themes, you can organise your literature review into subsections that address different aspects of the topic.

Methodological

Look at what results have emerged in qualitative versus quantitative research
Discuss how the topic has been approached by empirical versus theoretical scholarship
Divide the literature into sociological, historical, and cultural sources

Theoretical

A literature review is often the foundation for a theoretical framework . You can use it to discuss various theories, models, and definitions of key concepts.

You might argue for the relevance of a specific theoretical approach, or combine various theoretical concepts to create a framework for your research.

Like any other academic text, your literature review should have an introduction , a main body, and a conclusion . What you include in each depends on the objective of your literature review.

The introduction should clearly establish the focus and purpose of the literature review.

If you are writing the literature review as part of your dissertation or thesis, reiterate your central problem or research question and give a brief summary of the scholarly context. You can emphasise the timeliness of the topic (“many recent studies have focused on the problem of x”) or highlight a gap in the literature (“while there has been much research on x, few researchers have taken y into consideration”).

Depending on the length of your literature review, you might want to divide the body into subsections. You can use a subheading for each theme, time period, or methodological approach.

As you write, make sure to follow these tips:

Summarise and synthesise: give an overview of the main points of each source and combine them into a coherent whole.
Analyse and interpret: don’t just paraphrase other researchers – add your own interpretations, discussing the significance of findings in relation to the literature as a whole.
Critically evaluate: mention the strengths and weaknesses of your sources.
Write in well-structured paragraphs: use transitions and topic sentences to draw connections, comparisons and contrasts.

In the conclusion, you should summarise the key findings you have taken from the literature and emphasise their significance.

If the literature review is part of your dissertation or thesis, reiterate how your research addresses gaps and contributes new knowledge, or discuss how you have drawn on existing theories and methods to build a framework for your research. This can lead directly into your methodology section.

A literature review is a survey of scholarly sources (such as books, journal articles, and theses) related to a specific topic or research question .

It is often written as part of a dissertation , thesis, research paper , or proposal .

There are several reasons to conduct a literature review at the beginning of a research project:

To familiarise yourself with the current state of knowledge on your topic
To ensure that you’re not just repeating what others have already done
To identify gaps in knowledge and unresolved problems that your research can address
To develop your theoretical framework and methodology
To provide an overview of the key findings and debates on the topic

Writing the literature review shows your reader how your work relates to existing research and what new insights it will contribute.

The literature review usually comes near the beginning of your dissertation . After the introduction , it grounds your research in a scholarly field and leads directly to your theoretical framework or methodology .

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How To Write An A-Grade Literature Review

3 straightforward steps (with examples) + free template.

By: Derek Jansen (MBA) | Expert Reviewed By: Dr. Eunice Rautenbach | October 2019

Quality research is about building onto the existing work of others , “standing on the shoulders of giants”, as Newton put it. The literature review chapter of your dissertation, thesis or research project is where you synthesise this prior work and lay the theoretical foundation for your own research.

Long story short, this chapter is a pretty big deal, which is why you want to make sure you get it right . In this post, I’ll show you exactly how to write a literature review in three straightforward steps, so you can conquer this vital chapter (the smart way).

Overview: The Literature Review Process

Understanding the “ why “
Finding the relevant literature
Cataloguing and synthesising the information
Outlining & writing up your literature review
Example of a literature review

But first, the “why”…

Before we unpack how to write the literature review chapter, we’ve got to look at the why . To put it bluntly, if you don’t understand the function and purpose of the literature review process, there’s no way you can pull it off well. So, what exactly is the purpose of the literature review?

Well, there are (at least) four core functions:

For you to gain an understanding (and demonstrate this understanding) of where the research is at currently, what the key arguments and disagreements are.
For you to identify the gap(s) in the literature and then use this as justification for your own research topic.
To help you build a conceptual framework for empirical testing (if applicable to your research topic).
To inform your methodological choices and help you source tried and tested questionnaires (for interviews ) and measurement instruments (for surveys ).

Most students understand the first point but don’t give any thought to the rest. To get the most from the literature review process, you must keep all four points front of mind as you review the literature (more on this shortly), or you’ll land up with a wonky foundation.

Okay – with the why out the way, let’s move on to the how . As mentioned above, writing your literature review is a process, which I’ll break down into three steps:

Finding the most suitable literature
Understanding , distilling and organising the literature
Planning and writing up your literature review chapter

Importantly, you must complete steps one and two before you start writing up your chapter. I know it’s very tempting, but don’t try to kill two birds with one stone and write as you read. You’ll invariably end up wasting huge amounts of time re-writing and re-shaping, or you’ll just land up with a disjointed, hard-to-digest mess . Instead, you need to read first and distil the information, then plan and execute the writing.

Step 1: Find the relevant literature

Naturally, the first step in the literature review journey is to hunt down the existing research that’s relevant to your topic. While you probably already have a decent base of this from your research proposal , you need to expand on this substantially in the dissertation or thesis itself.

Essentially, you need to be looking for any existing literature that potentially helps you answer your research question (or develop it, if that’s not yet pinned down). There are numerous ways to find relevant literature, but I’ll cover my top four tactics here. I’d suggest combining all four methods to ensure that nothing slips past you:

Method 1 – Google Scholar Scrubbing

Google’s academic search engine, Google Scholar , is a great starting point as it provides a good high-level view of the relevant journal articles for whatever keyword you throw at it. Most valuably, it tells you how many times each article has been cited, which gives you an idea of how credible (or at least, popular) it is. Some articles will be free to access, while others will require an account, which brings us to the next method.

Method 2 – University Database Scrounging

Generally, universities provide students with access to an online library, which provides access to many (but not all) of the major journals.

So, if you find an article using Google Scholar that requires paid access (which is quite likely), search for that article in your university’s database – if it’s listed there, you’ll have access. Note that, generally, the search engine capabilities of these databases are poor, so make sure you search for the exact article name, or you might not find it.

Method 3 – Journal Article Snowballing

At the end of every academic journal article, you’ll find a list of references. As with any academic writing, these references are the building blocks of the article, so if the article is relevant to your topic, there’s a good chance a portion of the referenced works will be too. Do a quick scan of the titles and see what seems relevant, then search for the relevant ones in your university’s database.

Method 4 – Dissertation Scavenging

Similar to Method 3 above, you can leverage other students’ dissertations. All you have to do is skim through literature review chapters of existing dissertations related to your topic and you’ll find a gold mine of potential literature. Usually, your university will provide you with access to previous students’ dissertations, but you can also find a much larger selection in the following databases:

Open Access Theses & Dissertations
Stanford SearchWorks

Keep in mind that dissertations and theses are not as academically sound as published, peer-reviewed journal articles (because they’re written by students, not professionals), so be sure to check the credibility of any sources you find using this method. You can do this by assessing the citation count of any given article in Google Scholar. If you need help with assessing the credibility of any article, or with finding relevant research in general, you can chat with one of our Research Specialists .

Alright – with a good base of literature firmly under your belt, it’s time to move onto the next step.

Need a helping hand?

Step 2: Log, catalogue and synthesise

Once you’ve built a little treasure trove of articles, it’s time to get reading and start digesting the information – what does it all mean?

While I present steps one and two (hunting and digesting) as sequential, in reality, it’s more of a back-and-forth tango – you’ll read a little , then have an idea, spot a new citation, or a new potential variable, and then go back to searching for articles. This is perfectly natural – through the reading process, your thoughts will develop , new avenues might crop up, and directional adjustments might arise. This is, after all, one of the main purposes of the literature review process (i.e. to familiarise yourself with the current state of research in your field).

As you’re working through your treasure chest, it’s essential that you simultaneously start organising the information. There are three aspects to this:

Logging reference information
Building an organised catalogue
Distilling and synthesising the information

I’ll discuss each of these below:

2.1 – Log the reference information

As you read each article, you should add it to your reference management software. I usually recommend Mendeley for this purpose (see the Mendeley 101 video below), but you can use whichever software you’re comfortable with. Most importantly, make sure you load EVERY article you read into your reference manager, even if it doesn’t seem very relevant at the time.

2.2 – Build an organised catalogue

In the beginning, you might feel confident that you can remember who said what, where, and what their main arguments were. Trust me, you won’t. If you do a thorough review of the relevant literature (as you must!), you’re going to read many, many articles, and it’s simply impossible to remember who said what, when, and in what context . Also, without the bird’s eye view that a catalogue provides, you’ll miss connections between various articles, and have no view of how the research developed over time. Simply put, it’s essential to build your own catalogue of the literature.

I would suggest using Excel to build your catalogue, as it allows you to run filters, colour code and sort – all very useful when your list grows large (which it will). How you lay your spreadsheet out is up to you, but I’d suggest you have the following columns (at minimum):

Author, date, title – Start with three columns containing this core information. This will make it easy for you to search for titles with certain words, order research by date, or group by author.
Categories or keywords – You can either create multiple columns, one for each category/theme and then tick the relevant categories, or you can have one column with keywords.
Key arguments/points – Use this column to succinctly convey the essence of the article, the key arguments and implications thereof for your research.
Context – Note the socioeconomic context in which the research was undertaken. For example, US-based, respondents aged 25-35, lower- income, etc. This will be useful for making an argument about gaps in the research.
Methodology – Note which methodology was used and why. Also, note any issues you feel arise due to the methodology. Again, you can use this to make an argument about gaps in the research.
Quotations – Note down any quoteworthy lines you feel might be useful later.
Notes – Make notes about anything not already covered. For example, linkages to or disagreements with other theories, questions raised but unanswered, shortcomings or limitations, and so forth.

If you’d like, you can try out our free catalog template here (see screenshot below).

2.3 – Digest and synthesise

Most importantly, as you work through the literature and build your catalogue, you need to synthesise all the information in your own mind – how does it all fit together? Look for links between the various articles and try to develop a bigger picture view of the state of the research. Some important questions to ask yourself are:

What answers does the existing research provide to my own research questions ?
Which points do the researchers agree (and disagree) on?
How has the research developed over time?
Where do the gaps in the current research lie?

To help you develop a big-picture view and synthesise all the information, you might find mind mapping software such as Freemind useful. Alternatively, if you’re a fan of physical note-taking, investing in a large whiteboard might work for you.

Mind mapping is a useful way to plan your literature review.

Step 3: Outline and write it up!

Once you’re satisfied that you have digested and distilled all the relevant literature in your mind, it’s time to put pen to paper (or rather, fingers to keyboard). There are two steps here – outlining and writing:

3.1 – Draw up your outline

Having spent so much time reading, it might be tempting to just start writing up without a clear structure in mind. However, it’s critically important to decide on your structure and develop a detailed outline before you write anything. Your literature review chapter needs to present a clear, logical and an easy to follow narrative – and that requires some planning. Don’t try to wing it!

Naturally, you won’t always follow the plan to the letter, but without a detailed outline, you’re more than likely going to end up with a disjointed pile of waffle , and then you’re going to spend a far greater amount of time re-writing, hacking and patching. The adage, “measure twice, cut once” is very suitable here.

In terms of structure, the first decision you’ll have to make is whether you’ll lay out your review thematically (into themes) or chronologically (by date/period). The right choice depends on your topic, research objectives and research questions, which we discuss in this article .

Once that’s decided, you need to draw up an outline of your entire chapter in bullet point format. Try to get as detailed as possible, so that you know exactly what you’ll cover where, how each section will connect to the next, and how your entire argument will develop throughout the chapter. Also, at this stage, it’s a good idea to allocate rough word count limits for each section, so that you can identify word count problems before you’ve spent weeks or months writing!

PS – check out our free literature review chapter template…

3.2 – Get writing

With a detailed outline at your side, it’s time to start writing up (finally!). At this stage, it’s common to feel a bit of writer’s block and find yourself procrastinating under the pressure of finally having to put something on paper. To help with this, remember that the objective of the first draft is not perfection – it’s simply to get your thoughts out of your head and onto paper, after which you can refine them. The structure might change a little, the word count allocations might shift and shuffle, and you might add or remove a section – that’s all okay. Don’t worry about all this on your first draft – just get your thoughts down on paper.

Once you’ve got a full first draft (however rough it may be), step away from it for a day or two (longer if you can) and then come back at it with fresh eyes. Pay particular attention to the flow and narrative – does it fall fit together and flow from one section to another smoothly? Now’s the time to try to improve the linkage from each section to the next, tighten up the writing to be more concise, trim down word count and sand it down into a more digestible read.

Once you’ve done that, give your writing to a friend or colleague who is not a subject matter expert and ask them if they understand the overall discussion. The best way to assess this is to ask them to explain the chapter back to you. This technique will give you a strong indication of which points were clearly communicated and which weren’t. If you’re working with Grad Coach, this is a good time to have your Research Specialist review your chapter.

Finally, tighten it up and send it off to your supervisor for comment. Some might argue that you should be sending your work to your supervisor sooner than this (indeed your university might formally require this), but in my experience, supervisors are extremely short on time (and often patience), so, the more refined your chapter is, the less time they’ll waste on addressing basic issues (which you know about already) and the more time they’ll spend on valuable feedback that will increase your mark-earning potential.

Literature Review Example

In the video below, we unpack an actual literature review so that you can see how all the core components come together in reality.

Let’s Recap

In this post, we’ve covered how to research and write up a high-quality literature review chapter. Let’s do a quick recap of the key takeaways:

It is essential to understand the WHY of the literature review before you read or write anything. Make sure you understand the 4 core functions of the process.
The first step is to hunt down the relevant literature . You can do this using Google Scholar, your university database, the snowballing technique and by reviewing other dissertations and theses.
Next, you need to log all the articles in your reference manager , build your own catalogue of literature and synthesise all the research.
Following that, you need to develop a detailed outline of your entire chapter – the more detail the better. Don’t start writing without a clear outline (on paper, not in your head!)
Write up your first draft in rough form – don’t aim for perfection. Remember, done beats perfect.
Refine your second draft and get a layman’s perspective on it . Then tighten it up and submit it to your supervisor.

Psst… there’s more!

This post is an extract from our bestselling Udemy Course, Literature Review Bootcamp . If you want to work smart, you don't want to miss this .

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38 Comments

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You’re welcome, Yinka. Thank you for the kind words. All the best writing your literature review.

Thank you for a very useful literature review session. Although I am doing most of the steps…it being my first masters an Mphil is a self study and one not sure you are on the right track. I have an amazing supervisor but one also knows they are super busy. So not wanting to bother on the minutae. Thank you.

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Thank you for this whole literature writing review.You have simplified the process.

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You’re welcome, Maithe. Good luck writing your literature review 🙂

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Good morning scholar. I’m delighted coming to know you even before the commencement of my dissertation which hopefully is expected in not more than six months from now. I would love to engage my study under your guidance from the beginning to the end. I love to know how to do good job

Thank you so much Derek for such useful information on writing up a good literature review. I am at a stage where I need to start writing my one. My proposal was accepted late last year but I honestly did not know where to start

Like the name of your YouTube implies you are GRAD (great,resource person, about dissertation). In short you are smart enough in coaching research work.

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Very comprehensive and eye opener for me as beginner in postgraduate study. Well explained and easy to understand. Appreciate and good reference in guiding me in my research journey. Thank you

Thank you. I requested to download the free literature review template, however, your website wouldn’t allow me to complete the request or complete a download. May I request that you email me the free template? Thank you.

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Structured literature reviews – A guide for students

This is a step-by-step guide aimed at Master's students undertaking a structured literature review as part of their Master's thesis.

There are several different kinds of literature reviews, but any literature review typically includes an extensive literature search. Whenever a systematic approach is used, the literature search features a methodical step-by-step procedure. However, as a Master's student, it might not be possible to fulfill all the criteria of a systematic review when writing a literature review-based thesis; you should rather do a structured literature review, which will include only certain aspects of the systematic review methodology.

In this guide we will go through the different steps of a structured literature review and provide tips on how to make your search strategy more structured and extensive. Additionally, make sure to follow any programme and course specific requirements.

Step 1: Formulate and delimit your research question

It will be much easier for you to perform a structured information search if you first define and delimit your research question in a clear way.
One way to define and structure your question is to break it down into different parts .
PICO and PEO are two different frameworks that can be used for breaking down a research question into different parts.
You also need to define the most important key concepts of your research question.

The formulation of your research question is partly connected to what kind of literature review you are doing. This article by Maria J. Grant and Andrew Booth usefully compares different kinds of reviews . While a systematic literature review is usually grounded in a clearly delimited and structured question, a scoping review may, for instance, feature a wider problem formulation. The wider a research question is, the larger number of search hits it tends to generate.

To be able to perform a literature review, you need to consider a subject area in which there seems to be a sufficiently large number of original research studies. Therefore, it may be a good idea to test search a database for previous research on the subject while you are trying to formulate and delimit your research question.

One way to structure your research question is to break it down into different parts. A well-delimited question often consists of three to four different parts. PICO and PEO are two examples of frameworks that can help you identify and define your research question.

PICO ( P opulation, I ntervention, C omparison, O utcome) is primarily used for quantitative research questions.
PEO ( P opulation, E xposure, O utcome) is primarily used for qualitative research questions.

Structuring your research question in accordance with a framework, such as PICO or PEO, will also help you decide on the inclusion and exclusion criteria of your literature review.

PICO & PEO

After you have delimited your research question, you also need to identify the key concepts that make up your question. Based on these key concepts, you will create " search blocks " that you will use to organise your search terms.

Step 2: Find search terms and create search blocks

Test searching is a good way to investigate the terminology of a subject area and find search terms.
Reading key articles can help you gather additional search terms for your final search strategy.
Find subject headings for PubMed with the help of the US National Library of Medicine's MeSH database.
Find& free-text search terms by investigating what words that occur in the title and abstract of relevant articles.
A good way of achieving a structured final search query is to arrange your search terms into search blocks ; these blocks should arise from the key concepts of your research question.

While working on a literature review-based thesis, you will need to search for articles on several occasions. In the beginning of your project, it is often good to do a couple of unstructured and simple search queries, so-called test searches, in academic databases. This way you are off to a good start, as test searching helps you investigate the terminology of your subject area and find relevant search terms. While the final search strategy is typically reported in full, you don't need to present your test queries in your thesis.

Try to find a couple of key articles, that is, articles that correspond to the type of studies that you are planning to include in your review. Use key articles to gather additional search terms for your final search strategy. Analyse the terminology of your key articles by examining what subject headings (MeSH terms, etc.) that the articles have been tagged with and what words that occur in the titles and abstracts.

Test search - find keywords and narrow down your topic

Test search in pubmed & cinahl.

To retrieve as many relevant studies as possible, you will need to include free-text search terms as well as subject headings in your final search strategy. Free-text search terms are words that occur in the article's title and abstract – words used by the authors themselves. Subject headings are subject-related words that an article is tagged with when the article is added to the database.

In PubMed , articles are tagged with MeSH terms ( Me dical S ubject H eadings). You can look up and browse MeSH terms in the US National Library of Medicine's MeSH database .
Databases such as CINAHL , PsycInfo , ERIC , and Sociological Abstracts have their own subject heading lists; look up subject headings in each database's subject heading list.
There are also so-called free-text databases, such as Web of Science . These databases lack subject heading lists. Hence, when searching a free-text database, you can only use free-text search terms.

Find subject headings

An effective way to increase the structure of your final search strategy is to arrange your search terms in so-called search blocks . Create your search blocks based on the key concepts of your research question.

Create search blocks

This search strategy worksheet might help you document and organise your search terms.

Download worksheet

Worksheet for search terms (Word, 30.54 KB)

Step 3: Search in a structured way

To get a comprehensive search result, you will need to search for articles in several different databases .
Your search strategy should be as uniform as possible in every database, but you may have to adapt your use of subject headings .
As you search the databases, combine your search terms and blocks with the help of AND and OR .
Save time by documenting your search queries .

When doing a literature review-based thesis it is often wise to use at least two different databases. Many databases overlap, but may also contain unique content. At KI it is common for Master's students to use PubMed and Web of Science when doing a structured literature review as part of their Master's thesis. Depending on your research question, other databases may also be appropriate and useful. Read more about the most frequently used databases at KI .

Your search strategy should be as uniform as possible in every database. However, as mentioned in Step 2, databases may use different subject headings, and some databases only let you use free-text search terms. This means that you need to adapt your use of subject headings depending on the database.

Example: How subject headings may differ between databases

If you want to search for articles about day surgery in PubMed, you should use the MeSH term Ambulatory Surgical Procedures . However, if you also want to perform your search in a database such as CINAHL, you need to use the corresponding CINAHL Headings term instead: Ambulatory Surgery .

There are many different ways of searching databases. Most databases have one simple, basic Google-like search box and one advanced search form. One advantage of the latter is that combining search terms with AND and OR is usually easier in an advanced search form, especially if you will be using both AND and OR within the same search query. However, you can often combine search terms with AND and OR in a basic search box too, and in that case, you often isolate your different search blocks from each other by enclosing each block in parentheses.

Example: A search query that contains AND, OR, and parentheses

( inflammatory bowel diseases OR ulcerative colitis OR crohn disease) AND (adolescent OR child OR young adult OR teenager) AND (self-management OR self care OR self efficacy )

By choosing the advanced search form you will also be able to exert more control over your search process. The advanced search form lets you specify more closely and decide exactly how you want the database to interpret your search terms; this way you can make your search query more precise.

You should always document your search strategy in order to remember what search terms you have used, how these search terms have been combined, and whether you have applied any limits to your search. The easiest way to do this is to copy and paste your search history from the database into a text document. Also, academic databases often let you create a personal account, so that you may save your searches online.

How to do a structured search in PubMed

Step 4: narrowing or broadening your search.

Briefly examine your search results to see if you need to narrow or broaden your search query.
Investigate whether your key articles are present in the search results.
By using the advanced search form you can improve your search.

Prepare yourself for having to modify and redo your search query several times, before deciding on your final search strategy. After you have combined all your search terms and made your very first database search, you should examine the search results and analyse whether your search query is able to generate the type of search hits that you are looking for.

Analyse your search results

Are all your key articles present in the search results, or are there some key articles that your search query is unable to retrieve?
Are you getting too few search hits ? Investigate why. Perhaps you need to remove one of your search blocks, add one or several synonyms within a search block, or search for parts of words by truncating one or several of your free-text search terms, in order to broaden your search ?
Does your search strategy generate too many non-relevant search hits that have nothing to do with your research question? Investigate why. Perhaps you need to add another search block, remove one of the synonyms from one of your search blocks, or search for phrases by enclosing one or several of your free-text terms in quotation marks, in order to narrow your search ?
More tips on how to improve your search strategy .

It is important to remember that there is nothing wrong, per se, if your search query generates irrelevant hits. This is quite normal when performing a structured literature search. What's important is that your search strategy is able to retrieve the type of articles that you are looking for, and that you are not overwhelmed by the total number of hits (given the time frame of your thesis project).

We recommend that you use the advanced search form when improving your search strategy. By using the advanced search form, you will for example be able to specify which search fields your search terms must be present in.

Narrowing your search

Broaden your search, how to specify the field you would like to search in pubmed, step 5: select and review articles.

After you have completed your search, you will need to go through all your search hits and select which articles to include in your review.
When selecting articles, read through the titles and abstracts of each article to decide its relevancy .
Check the quality of each study that you include in your review.
When checking the quality of articles, it is common to use critical appraisal worksheets or checklists .

Selecting articles

When you have completed and feel satisfied with your search, it is time to go through all the search hits and select which studies to include in your review. All relevant studies, that is, those studies that correspond to your research question and your previously set inclusion criteria, should be included. You decide on the relevancy of a study primarily by reading through the title and abstract. If you feel unsure, go through the whole article. You can describe your selection process with the help of a flow chart, such as the frequently used PRISMA flow diagram .

One of the challenges of systematic literature searches is that the search strategy should be exhaustive, but at the same time the number of search hits also needs to be kept within reasonable boundaries. A search query needs to be broad enough to retrieve all relevant studies, but on the other hand, this also means that a large portion of the search results will be irrelevant. Hence, even though your search strategy may have generated hundreds of hits, it is fine to only include ten to twenty articles in your review in the end.

Saving articles

If you create a personal account in a database it will be easier for you to save any references that you may find there. Another way of saving and organising article references is to use reference management software. There are several different reference management software, for example Endnote Online and Zotero.

Read more about reference management and see software guides.

Reviewing articles

When you have made your selection, you should critically examine the quality of all articles included in your review. The assessment is typically performed with the help of a critical appraisal guide or checklist. The purpose is to assess the reliability of the study results and whether there are any methodological flaws that may have impacted the results. Qualitative research articles are often reviewed with a focus on authenticity, credibility, and validity.

There are many different critical appraisal worksheets and checklists. Some examples are the SBU checklists for assessing the quality of randomized studies, observational studies, and qualitative research. In the course book How to do a systematic review in nursing there is a review guide that can be used for assessing different kinds of studies (both qualitative and quantitative); the original source is Caldwell, Henshaw & Taylor, 2011 .

Review worksheets and checklists contain criteria and questions that may help you identify flaws, errors, or bias. Sometimes different aspects of the study are scored separately. Later, all scores make up a final score that indicates whether the study is of high, medium, or low quality.

Many programmes and courses provide instructions on which checklists to use when reviewing articles, so check your course guidelines.

Step 6: Report your search strategy

Describe your search strategy in a manner that makes it possible for your readers to replicate the search and get the same results.
The search strategy is often presented in the form of a table .
Look at the search history to see what words and limits that you have used when searching a database.

An important aspect of doing a structured literature review is transparency. It has to be easy for your readers to follow what you did when you searched and selected the articles that you have included in your review. In the method section of your literature review you should describe how you searched different databases. This is also where you describe any manual searches that you did. Search strategies are commonly reported in the form of tables. Present one table for each database.

You can examine your search terms and any limits you have applied when searching a database by visiting its search history.

Read more about how to report your search strategy and view examples.

Checklist for search strategies

Here is a checklist to help you review your own or someone else's search strategy.

If you would like us to get back to you, please submit your contact information in the form below along with your feeback.

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Open Access

Ten Simple Rules for Writing a Literature Review

* E-mail: [email protected]

Affiliations Centre for Functional and Evolutionary Ecology (CEFE), CNRS, Montpellier, France, Centre for Biodiversity Synthesis and Analysis (CESAB), FRB, Aix-en-Provence, France

Marco Pautasso

Published: July 18, 2013

https://doi.org/10.1371/journal.pcbi.1003149
Reader Comments

Citation: Pautasso M (2013) Ten Simple Rules for Writing a Literature Review. PLoS Comput Biol 9(7): e1003149. https://doi.org/10.1371/journal.pcbi.1003149

Editor: Philip E. Bourne, University of California San Diego, United States of America

Copyright: © 2013 Marco Pautasso. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Funding: This work was funded by the French Foundation for Research on Biodiversity (FRB) through its Centre for Synthesis and Analysis of Biodiversity data (CESAB), as part of the NETSEED research project. The funders had no role in the preparation of the manuscript.

Competing interests: The author has declared that no competing interests exist.

Literature reviews are in great demand in most scientific fields. Their need stems from the ever-increasing output of scientific publications [1] . For example, compared to 1991, in 2008 three, eight, and forty times more papers were indexed in Web of Science on malaria, obesity, and biodiversity, respectively [2] . Given such mountains of papers, scientists cannot be expected to examine in detail every single new paper relevant to their interests [3] . Thus, it is both advantageous and necessary to rely on regular summaries of the recent literature. Although recognition for scientists mainly comes from primary research, timely literature reviews can lead to new synthetic insights and are often widely read [4] . For such summaries to be useful, however, they need to be compiled in a professional way [5] .

When starting from scratch, reviewing the literature can require a titanic amount of work. That is why researchers who have spent their career working on a certain research issue are in a perfect position to review that literature. Some graduate schools are now offering courses in reviewing the literature, given that most research students start their project by producing an overview of what has already been done on their research issue [6] . However, it is likely that most scientists have not thought in detail about how to approach and carry out a literature review.

Reviewing the literature requires the ability to juggle multiple tasks, from finding and evaluating relevant material to synthesising information from various sources, from critical thinking to paraphrasing, evaluating, and citation skills [7] . In this contribution, I share ten simple rules I learned working on about 25 literature reviews as a PhD and postdoctoral student. Ideas and insights also come from discussions with coauthors and colleagues, as well as feedback from reviewers and editors.

Rule 1: Define a Topic and Audience

How to choose which topic to review? There are so many issues in contemporary science that you could spend a lifetime of attending conferences and reading the literature just pondering what to review. On the one hand, if you take several years to choose, several other people may have had the same idea in the meantime. On the other hand, only a well-considered topic is likely to lead to a brilliant literature review [8] . The topic must at least be:

interesting to you (ideally, you should have come across a series of recent papers related to your line of work that call for a critical summary),
an important aspect of the field (so that many readers will be interested in the review and there will be enough material to write it), and
a well-defined issue (otherwise you could potentially include thousands of publications, which would make the review unhelpful).

Ideas for potential reviews may come from papers providing lists of key research questions to be answered [9] , but also from serendipitous moments during desultory reading and discussions. In addition to choosing your topic, you should also select a target audience. In many cases, the topic (e.g., web services in computational biology) will automatically define an audience (e.g., computational biologists), but that same topic may also be of interest to neighbouring fields (e.g., computer science, biology, etc.).

Rule 2: Search and Re-search the Literature

After having chosen your topic and audience, start by checking the literature and downloading relevant papers. Five pieces of advice here:

keep track of the search items you use (so that your search can be replicated [10] ),
keep a list of papers whose pdfs you cannot access immediately (so as to retrieve them later with alternative strategies),
use a paper management system (e.g., Mendeley, Papers, Qiqqa, Sente),
define early in the process some criteria for exclusion of irrelevant papers (these criteria can then be described in the review to help define its scope), and
do not just look for research papers in the area you wish to review, but also seek previous reviews.

The chances are high that someone will already have published a literature review ( Figure 1 ), if not exactly on the issue you are planning to tackle, at least on a related topic. If there are already a few or several reviews of the literature on your issue, my advice is not to give up, but to carry on with your own literature review,

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The bottom-right situation (many literature reviews but few research papers) is not just a theoretical situation; it applies, for example, to the study of the impacts of climate change on plant diseases, where there appear to be more literature reviews than research studies [33] .

https://doi.org/10.1371/journal.pcbi.1003149.g001

discussing in your review the approaches, limitations, and conclusions of past reviews,
trying to find a new angle that has not been covered adequately in the previous reviews, and
incorporating new material that has inevitably accumulated since their appearance.

When searching the literature for pertinent papers and reviews, the usual rules apply:

be thorough,
use different keywords and database sources (e.g., DBLP, Google Scholar, ISI Proceedings, JSTOR Search, Medline, Scopus, Web of Science), and
look at who has cited past relevant papers and book chapters.

Rule 3: Take Notes While Reading

If you read the papers first, and only afterwards start writing the review, you will need a very good memory to remember who wrote what, and what your impressions and associations were while reading each single paper. My advice is, while reading, to start writing down interesting pieces of information, insights about how to organize the review, and thoughts on what to write. This way, by the time you have read the literature you selected, you will already have a rough draft of the review.

Of course, this draft will still need much rewriting, restructuring, and rethinking to obtain a text with a coherent argument [11] , but you will have avoided the danger posed by staring at a blank document. Be careful when taking notes to use quotation marks if you are provisionally copying verbatim from the literature. It is advisable then to reformulate such quotes with your own words in the final draft. It is important to be careful in noting the references already at this stage, so as to avoid misattributions. Using referencing software from the very beginning of your endeavour will save you time.

Rule 4: Choose the Type of Review You Wish to Write

After having taken notes while reading the literature, you will have a rough idea of the amount of material available for the review. This is probably a good time to decide whether to go for a mini- or a full review. Some journals are now favouring the publication of rather short reviews focusing on the last few years, with a limit on the number of words and citations. A mini-review is not necessarily a minor review: it may well attract more attention from busy readers, although it will inevitably simplify some issues and leave out some relevant material due to space limitations. A full review will have the advantage of more freedom to cover in detail the complexities of a particular scientific development, but may then be left in the pile of the very important papers “to be read” by readers with little time to spare for major monographs.

There is probably a continuum between mini- and full reviews. The same point applies to the dichotomy of descriptive vs. integrative reviews. While descriptive reviews focus on the methodology, findings, and interpretation of each reviewed study, integrative reviews attempt to find common ideas and concepts from the reviewed material [12] . A similar distinction exists between narrative and systematic reviews: while narrative reviews are qualitative, systematic reviews attempt to test a hypothesis based on the published evidence, which is gathered using a predefined protocol to reduce bias [13] , [14] . When systematic reviews analyse quantitative results in a quantitative way, they become meta-analyses. The choice between different review types will have to be made on a case-by-case basis, depending not just on the nature of the material found and the preferences of the target journal(s), but also on the time available to write the review and the number of coauthors [15] .

Rule 5: Keep the Review Focused, but Make It of Broad Interest

Whether your plan is to write a mini- or a full review, it is good advice to keep it focused 16 , 17 . Including material just for the sake of it can easily lead to reviews that are trying to do too many things at once. The need to keep a review focused can be problematic for interdisciplinary reviews, where the aim is to bridge the gap between fields [18] . If you are writing a review on, for example, how epidemiological approaches are used in modelling the spread of ideas, you may be inclined to include material from both parent fields, epidemiology and the study of cultural diffusion. This may be necessary to some extent, but in this case a focused review would only deal in detail with those studies at the interface between epidemiology and the spread of ideas.

While focus is an important feature of a successful review, this requirement has to be balanced with the need to make the review relevant to a broad audience. This square may be circled by discussing the wider implications of the reviewed topic for other disciplines.

Rule 6: Be Critical and Consistent

Reviewing the literature is not stamp collecting. A good review does not just summarize the literature, but discusses it critically, identifies methodological problems, and points out research gaps [19] . After having read a review of the literature, a reader should have a rough idea of:

the major achievements in the reviewed field,
the main areas of debate, and
the outstanding research questions.

It is challenging to achieve a successful review on all these fronts. A solution can be to involve a set of complementary coauthors: some people are excellent at mapping what has been achieved, some others are very good at identifying dark clouds on the horizon, and some have instead a knack at predicting where solutions are going to come from. If your journal club has exactly this sort of team, then you should definitely write a review of the literature! In addition to critical thinking, a literature review needs consistency, for example in the choice of passive vs. active voice and present vs. past tense.

Rule 7: Find a Logical Structure

Like a well-baked cake, a good review has a number of telling features: it is worth the reader's time, timely, systematic, well written, focused, and critical. It also needs a good structure. With reviews, the usual subdivision of research papers into introduction, methods, results, and discussion does not work or is rarely used. However, a general introduction of the context and, toward the end, a recapitulation of the main points covered and take-home messages make sense also in the case of reviews. For systematic reviews, there is a trend towards including information about how the literature was searched (database, keywords, time limits) [20] .

How can you organize the flow of the main body of the review so that the reader will be drawn into and guided through it? It is generally helpful to draw a conceptual scheme of the review, e.g., with mind-mapping techniques. Such diagrams can help recognize a logical way to order and link the various sections of a review [21] . This is the case not just at the writing stage, but also for readers if the diagram is included in the review as a figure. A careful selection of diagrams and figures relevant to the reviewed topic can be very helpful to structure the text too [22] .

Rule 8: Make Use of Feedback

Reviews of the literature are normally peer-reviewed in the same way as research papers, and rightly so [23] . As a rule, incorporating feedback from reviewers greatly helps improve a review draft. Having read the review with a fresh mind, reviewers may spot inaccuracies, inconsistencies, and ambiguities that had not been noticed by the writers due to rereading the typescript too many times. It is however advisable to reread the draft one more time before submission, as a last-minute correction of typos, leaps, and muddled sentences may enable the reviewers to focus on providing advice on the content rather than the form.

Feedback is vital to writing a good review, and should be sought from a variety of colleagues, so as to obtain a diversity of views on the draft. This may lead in some cases to conflicting views on the merits of the paper, and on how to improve it, but such a situation is better than the absence of feedback. A diversity of feedback perspectives on a literature review can help identify where the consensus view stands in the landscape of the current scientific understanding of an issue [24] .

Rule 9: Include Your Own Relevant Research, but Be Objective

In many cases, reviewers of the literature will have published studies relevant to the review they are writing. This could create a conflict of interest: how can reviewers report objectively on their own work [25] ? Some scientists may be overly enthusiastic about what they have published, and thus risk giving too much importance to their own findings in the review. However, bias could also occur in the other direction: some scientists may be unduly dismissive of their own achievements, so that they will tend to downplay their contribution (if any) to a field when reviewing it.

In general, a review of the literature should neither be a public relations brochure nor an exercise in competitive self-denial. If a reviewer is up to the job of producing a well-organized and methodical review, which flows well and provides a service to the readership, then it should be possible to be objective in reviewing one's own relevant findings. In reviews written by multiple authors, this may be achieved by assigning the review of the results of a coauthor to different coauthors.

Rule 10: Be Up-to-Date, but Do Not Forget Older Studies

Given the progressive acceleration in the publication of scientific papers, today's reviews of the literature need awareness not just of the overall direction and achievements of a field of inquiry, but also of the latest studies, so as not to become out-of-date before they have been published. Ideally, a literature review should not identify as a major research gap an issue that has just been addressed in a series of papers in press (the same applies, of course, to older, overlooked studies (“sleeping beauties” [26] )). This implies that literature reviewers would do well to keep an eye on electronic lists of papers in press, given that it can take months before these appear in scientific databases. Some reviews declare that they have scanned the literature up to a certain point in time, but given that peer review can be a rather lengthy process, a full search for newly appeared literature at the revision stage may be worthwhile. Assessing the contribution of papers that have just appeared is particularly challenging, because there is little perspective with which to gauge their significance and impact on further research and society.

Inevitably, new papers on the reviewed topic (including independently written literature reviews) will appear from all quarters after the review has been published, so that there may soon be the need for an updated review. But this is the nature of science [27] – [32] . I wish everybody good luck with writing a review of the literature.

Acknowledgments

Many thanks to M. Barbosa, K. Dehnen-Schmutz, T. Döring, D. Fontaneto, M. Garbelotto, O. Holdenrieder, M. Jeger, D. Lonsdale, A. MacLeod, P. Mills, M. Moslonka-Lefebvre, G. Stancanelli, P. Weisberg, and X. Xu for insights and discussions, and to P. Bourne, T. Matoni, and D. Smith for helpful comments on a previous draft.

1. Rapple C (2011) The role of the critical review article in alleviating information overload. Annual Reviews White Paper. Available: http://www.annualreviews.org/userimages/ContentEditor/1300384004941/Annual_Reviews_WhitePaper_Web_2011.pdf . Accessed May 2013.
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7. Budgen D, Brereton P (2006) Performing systematic literature reviews in software engineering. Proc 28th Int Conf Software Engineering, ACM New York, NY, USA, pp. 1051–1052. doi: https://doi.org/10.1145/1134285.1134500 .
16. Eco U (1977) Come si fa una tesi di laurea. Milan: Bompiani.
17. Hart C (1998) Doing a literature review: releasing the social science research imagination. London: SAGE.
21. Ridley D (2008) The literature review: a step-by-step guide for students. London: SAGE.

Library Catalogue

Academic writing: What is a literature review?

A review of the literature in a discipline is not the same as an annotated bibliography of sources, though an annotated bibliography can be a type of literature review. The purpose of a lit review is not only to tell your reader the state of scholarship about a given topic, but also to organize and evaluate the major points, parts, or arguments of each source. From the University of Toronto Writing Centre’s Tips on Conducting the Literature Review :

"A literature review is a piece of discursive prose , not a list describing or summarizing one piece of literature after another. It's usually a bad sign to see every paragraph beginning with the name of a researcher. Instead, organize the literature review into sections that present themes or identify trends, including relevant theory. You are not trying to list all the material published, but to synthesize and evaluate it according to the guiding concept of your thesis or research question."

A lit review may serve as a stand-alone piece or article. For example, see this published Stand-Alone Literature Review (content note: this literature review focuses on the topic of abuse against women with disabilities). However, more often a lit review is part of a larger research publication. For example, see this published research article that includes a Literature Review (content note: this article discusses depression among college students).

What should a literature review include?

Introduction: Explain why this research topic is important. Outline what direction your review will take: i.e., what aspects of the topic you’re focusing on.

Body : Present your summaries and evaluations of the sources in a clear, logical, and coherent manner. Some options for organizing your review include chronological, order of importance, two sides of a controversial problem, differences in perspective or viewpoint. Your review must “read” like a coherent paper, not a list.

Note: Most literature reviews describe only the main findings, relevant methodological issues, and/or major conclusions of other research.

Ensure your final list of references includes all sources you’ve discussed, and use the citation style required in your discipline.

Don’t provide a lot of detail about the procedures used in your sources. Don’t mention every study conducted on the topic. Include only the ones that are most relevant for the purpose and scope of your review.

Plan and organize your literature review

Define your central problem, issue, or focus (create a research question or thesis statement)
Consider audience expectations. In writing the literature review, your purpose is to convey to your reader what knowledge and ideas have been established on a topic, and what their strengths and weaknesses are.
summarize the “gist” or main ideas of the source
comment on the source’s usefulness, relevance, methodology, and/or findings in the context of your question or issue
Do not use a “list-like” approach in drafting your lit review. Rather, organize your information logically to address your research question, thesis, or central issue. For more, see the Writeonline.ca guide to Literature Reviews and the Monash University Learn HQ mini-module on Literature Reviews (including sections on the process of writing a literature review, structuring a literature review, and the language of literature reviews).

Revise your literature review, keeping in mind these tips for effective writing

Pay attention to sentence structure
Use the active and passive voices appropriately
Reduce or omit wordy, redundant phrases
Proofread for common punctuation and expression errors

For more about literature reviews, including definitions, protocols and guidelines, search strategies, and managing citations, see the Library's Literature reviews for graduate students .

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Writing a Literature Review

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A literature review is a document or section of a document that collects key sources on a topic and discusses those sources in conversation with each other (also called synthesis ). The lit review is an important genre in many disciplines, not just literature (i.e., the study of works of literature such as novels and plays). When we say “literature review” or refer to “the literature,” we are talking about the research ( scholarship ) in a given field. You will often see the terms “the research,” “the scholarship,” and “the literature” used mostly interchangeably.

Where, when, and why would I write a lit review?

There are a number of different situations where you might write a literature review, each with slightly different expectations; different disciplines, too, have field-specific expectations for what a literature review is and does. For instance, in the humanities, authors might include more overt argumentation and interpretation of source material in their literature reviews, whereas in the sciences, authors are more likely to report study designs and results in their literature reviews; these differences reflect these disciplines’ purposes and conventions in scholarship. You should always look at examples from your own discipline and talk to professors or mentors in your field to be sure you understand your discipline’s conventions, for literature reviews as well as for any other genre.

A literature review can be a part of a research paper or scholarly article, usually falling after the introduction and before the research methods sections. In these cases, the lit review just needs to cover scholarship that is important to the issue you are writing about; sometimes it will also cover key sources that informed your research methodology.

Lit reviews can also be standalone pieces, either as assignments in a class or as publications. In a class, a lit review may be assigned to help students familiarize themselves with a topic and with scholarship in their field, get an idea of the other researchers working on the topic they’re interested in, find gaps in existing research in order to propose new projects, and/or develop a theoretical framework and methodology for later research. As a publication, a lit review usually is meant to help make other scholars’ lives easier by collecting and summarizing, synthesizing, and analyzing existing research on a topic. This can be especially helpful for students or scholars getting into a new research area, or for directing an entire community of scholars toward questions that have not yet been answered.

What are the parts of a lit review?

Most lit reviews use a basic introduction-body-conclusion structure; if your lit review is part of a larger paper, the introduction and conclusion pieces may be just a few sentences while you focus most of your attention on the body. If your lit review is a standalone piece, the introduction and conclusion take up more space and give you a place to discuss your goals, research methods, and conclusions separately from where you discuss the literature itself.

Introduction:

An introductory paragraph that explains what your working topic and thesis is
A forecast of key topics or texts that will appear in the review
Potentially, a description of how you found sources and how you analyzed them for inclusion and discussion in the review (more often found in published, standalone literature reviews than in lit review sections in an article or research paper)
Summarize and synthesize: Give an overview of the main points of each source and combine them into a coherent whole
Analyze and interpret: Don’t just paraphrase other researchers – add your own interpretations where possible, discussing the significance of findings in relation to the literature as a whole
Critically Evaluate: Mention the strengths and weaknesses of your sources
Write in well-structured paragraphs: Use transition words and topic sentence to draw connections, comparisons, and contrasts.

Conclusion:

Summarize the key findings you have taken from the literature and emphasize their significance
Connect it back to your primary research question

How should I organize my lit review?

Lit reviews can take many different organizational patterns depending on what you are trying to accomplish with the review. Here are some examples:

Chronological : The simplest approach is to trace the development of the topic over time, which helps familiarize the audience with the topic (for instance if you are introducing something that is not commonly known in your field). If you choose this strategy, be careful to avoid simply listing and summarizing sources in order. Try to analyze the patterns, turning points, and key debates that have shaped the direction of the field. Give your interpretation of how and why certain developments occurred (as mentioned previously, this may not be appropriate in your discipline — check with a teacher or mentor if you’re unsure).
Thematic : If you have found some recurring central themes that you will continue working with throughout your piece, you can organize your literature review into subsections that address different aspects of the topic. For example, if you are reviewing literature about women and religion, key themes can include the role of women in churches and the religious attitude towards women.
Qualitative versus quantitative research
Empirical versus theoretical scholarship
Divide the research by sociological, historical, or cultural sources
Theoretical : In many humanities articles, the literature review is the foundation for the theoretical framework. You can use it to discuss various theories, models, and definitions of key concepts. You can argue for the relevance of a specific theoretical approach or combine various theorical concepts to create a framework for your research.

What are some strategies or tips I can use while writing my lit review?

Any lit review is only as good as the research it discusses; make sure your sources are well-chosen and your research is thorough. Don’t be afraid to do more research if you discover a new thread as you’re writing. More info on the research process is available in our "Conducting Research" resources .

As you’re doing your research, create an annotated bibliography ( see our page on the this type of document ). Much of the information used in an annotated bibliography can be used also in a literature review, so you’ll be not only partially drafting your lit review as you research, but also developing your sense of the larger conversation going on among scholars, professionals, and any other stakeholders in your topic.

Usually you will need to synthesize research rather than just summarizing it. This means drawing connections between sources to create a picture of the scholarly conversation on a topic over time. Many student writers struggle to synthesize because they feel they don’t have anything to add to the scholars they are citing; here are some strategies to help you:

It often helps to remember that the point of these kinds of syntheses is to show your readers how you understand your research, to help them read the rest of your paper.
Writing teachers often say synthesis is like hosting a dinner party: imagine all your sources are together in a room, discussing your topic. What are they saying to each other?
Look at the in-text citations in each paragraph. Are you citing just one source for each paragraph? This usually indicates summary only. When you have multiple sources cited in a paragraph, you are more likely to be synthesizing them (not always, but often
Read more about synthesis here.

The most interesting literature reviews are often written as arguments (again, as mentioned at the beginning of the page, this is discipline-specific and doesn’t work for all situations). Often, the literature review is where you can establish your research as filling a particular gap or as relevant in a particular way. You have some chance to do this in your introduction in an article, but the literature review section gives a more extended opportunity to establish the conversation in the way you would like your readers to see it. You can choose the intellectual lineage you would like to be part of and whose definitions matter most to your thinking (mostly humanities-specific, but this goes for sciences as well). In addressing these points, you argue for your place in the conversation, which tends to make the lit review more compelling than a simple reporting of other sources.

Want to create or adapt books like this? Learn more about how Pressbooks supports open publishing practices.

Organising ideas in the body of your literature review

A person writing on a piece of paper with a pen

As discussed in the previous section, the body of your literature review needs to provide an account of the major themes, arguments and debates found in the literature and to articulate how these relate to each other and to your own research.

Since this usually involves reading through and taking notes on a large amount of sources, you will need a strategy that can help you organise the different ideas you have drawn from the literature.

One such important organisational strategy is the use of matrices.

Using matrices to organise the literature

Matrices are particularly useful for capturing key information from the texts that you have read and thefore providing an overview of this information.

They can help with identifying patterns such as:

which texts deal with which key identified themes
a text’s main points and how these fit under key identified themes
a text’s main points and how they can be used / incorporated in your writing
a text’s main points and whether they support or refute a particular argument.

Below are examples of matrices which capture information in the literature according to each of the above four organisational patterns.

Identifying texts dealing with key identified themes

Identifying a text’s main points in relation to key identified themes, identifying a text’s main points in relation to their incorporation in your writing, identifying a text’s main points in relation to supporting or refuting an argument.

Consider the different matricies presented above. Which of these ways of organising your ideas might be useful for you at the moment? (Keep in mind that different approaches might be more useful for you at different stages of reviewing the literature.)

If you would like to further explore the use of matrices as an organisational tool, take a few minutes to choose one of the above matrix types and begin organising the themes, ideas or arguments from the literature you are reading according to it.

Research and Writing Skills for Academic and Graduate Researchers Copyright © 2022 by RMIT University is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License , except where otherwise noted.

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John Barth, towering literary figure and revered mentor, dies at 93

Barth, a johns hopkins graduate who later taught at his alma mater for more than two decades, was known for his postmodernist, unpredictable fiction and his exacting, generous teaching.

By Rachel Wallach

John Barth, A&S '51, '52 (MA), groundbreaking and prolific author, revered teacher, and professor emeritus in The Writing Seminars at Johns Hopkins University, died Tuesday. He was 93.

Image caption: John Barth

Best known for his postmodernist, unpredictable fiction and his exacting and generous teaching, Barth served on the Johns Hopkins faculty from 1973 until he retired in 1995. He is the author of 17 novels and collections of short fiction and three collections of essays. He won a National Book Award, F. Scott Fitzgerald Award for Outstanding Achievement in American Fiction, a Lannan Foundation Lifetime Achievement Award, and the PEN/Malamud Award for Excellence in the Short Story.

"Not just a master of fiction and of the literary essay, John Barth was a rhetorician on the order of a Samuel Johnson," said Jean McGarry , A&S '83 (MA), Academy Professor and Barth's former student and then colleague in The Writing Seminars. "Well-read and deeply thoughtful, it was a pleasure to be in his company, whether as his student or colleague. Passionate about literature, and with peerless taste, he was full of wit and wisdom, and had an almost scientific gift for anatomizing the elements of fiction: bones, flesh, nerves, heart, and lungs. He was also funny, tall, and handsome, and never missed a trick. In a rare way, he epitomized his fiction in his own gallant and witty person."

Barth's upbringing on Maryland's Eastern Shore left a powerful echo in the coastal settings of many of his books as well as the understated, southern lilt to his voice. After almost embarking on a career as a jazz drummer, Barth stumbled into what was then Johns Hopkins' Writing, Speech, and Drama department. In a 1999 oral history with the Sheridan Libraries' Mame Warren that revealed a self-deprecating sense of humor, he credits his "a la carte" education (his job reshelving books from wheeled carts in the classics and Oriental Seminary stacks of the old Gilman library) with filling in much of the literary background he had not yet accrued.

After earning his master's degree at Hopkins, Barth served on the faculty of Penn State, SUNY Buffalo, and Boston University before returning to Hopkins as professor in what had then become The Writing Seminars with a joint appointment in the English department. He invited authors including Salman Rushdie, Grace Paley, John Updike, Raymond Carver, Joyce Carol Oates, and Italo Calvino to read from their work, and they did.

As a teacher, he was famous for never imposing his own style on his students, instead imparting to them a sense of both imagination and craftsmanship. His keen ear as a reader made him a deeply admired mentor; leading by example, he showed students how to dissect stories, listen for style and voice, and discern worthy storytelling—whether in their own writing or that of others.

"One of the delights of sitting in his classroom was hearing him X-ray a story, finding its hidden bone structure and energy source, and still be helpful in cutting away the fat," McGarry wrote for a festschrift for Barth in 2015.

John Barth, writer who pushed storytelling's limits, dies at 93

Michael Martone, A&S '79 (MA), remembers driving to Cambridge, Maryland, for the viewing when Barth's father died. "What I remember is that he told us three stories about funerals he had attended with the usual perfect presentation of his storytelling. It was amazing," said Martone, professor emeritus in the University of Alabama's Department of English. "That even in the midst of that moment he was composing the narratives that would become part of his future narratives and mine. He was all about the story and the famous Freytag pyramid. Stories have beginnings, middles, and ends, and each part needed tending, revising, and amending. And each part is connected, entwined, and harmonic.

"He was my teacher but also my first and always 'outside' reader," Martone added, noting that Barth had pledged on the first day of class to read his former students' published work if they sent it to him. "I did for forty-plus years, everything I published in magazines and books. And he responded every time with a brief note of receipt and a message of thanks and 'keep going, don't stop.'"

Image caption: John Barth is seated at the head of the table in the old board room at Shriver Hall in this image from the 1970s.

Image credit : Courtesy of the Ferdinand Hamburger Archives, Johns Hopkins University

Barth's fiction has been described as striking a commanding balance between postmodern self-consciousness and wordplay, and displays the characterization and compelling plot more common in more traditional genres. In works described as playful and challenging, funny and deadly serious, his plots fragment and his points of view shift. He covered ground from the Chesapeake Bay to the Bronze Age city Mycenae to a generic housing development. His translated works found wide audiences in languages including Finnish, Greek, Hungarian, Italian, Japanese, and Polish, and continue to make significant appearances in public readings, recordings, adaptations, reviews, and critical essays.

Barth's writing veered from the existential to comical nihilism to metafiction; in 1987's "The Tidewater Tales," a minimalist novelist and maximalist oral historian tell each other stories while sailing around the Chesapeake. "Lost in the Funhouse" features a 13-year-old boy exploring Ocean City, Maryland, with his family and simultaneously commenting on his own story, leaving readers reeling between the plot and the commentary as if visiting a boardwalk funhouse. Other best-known works include "The Sot-Weed Factor," "The Floating Opera," "Giles Goat-Boy," and "Chimera," for which he received the National Book Award for fiction in 1973

In 1995, Barth retired from Hopkins and became a senior fellow at Washington College in Chestertown, Maryland. He received an honorary Doctor of Humane Letters degree from Hopkins in 2011, was a fellow of the American Academy of Arts and Sciences, and was elected to the American Academy of Arts and Letters.

Tagged literature , writing seminars , obituaries , john barth

A remembrance of John Barth

Teacher, teacher

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A Literary Revival

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IMAGES

How to Write a Literature Review in 5 Simple Steps
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Review of Related Literature: What Is RRL & How to Write It (Examples)
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main components of a literature review

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Literature Review: Structure & APA Style
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COMMENTS

I don't understand how to write a literature review. : r/writing
Basically, all you need to do is read: (i) the Abstract (which should always tell you the topic of the article, as well as a brief mention of the final results); (ii) the Introduction (which will provide you with the thesis statement and some background information); and (iii) the Conclusion (which will provide you greater detail of the final ...
Recommendations on how to structure literature review chapter
I'm preparing for my Master's thesis and am unable to decide whether to structure my literature review chapter chronologically or group existing studies by themes and topics. The conventional approach would be to derive a structure from recurring themes in publications relevant to my topic.
How to Write a Literature Review
Step 1 - Search for relevant literature. Step 2 - Evaluate and select sources. Step 3 - Identify themes, debates, and gaps. Step 4 - Outline your literature review's structure. Step 5 - Write your literature review. Free lecture slides.
How To Structure A Literature Review (Free Template)
Demonstrate your knowledge of the research topic. Identify the gaps in the literature and show how your research links to these. Provide the foundation for your conceptual framework (if you have one) Inform your own methodology and research design. To achieve this, your literature review needs a well-thought-out structure.
How to write a superb literature review
The best proposals are timely and clearly explain why readers should pay attention to the proposed topic. It is not enough for a review to be a summary of the latest growth in the literature: the ...
five ways to structure a literature review
You structure the thematic review through either an examination of the kinds of questions that have been asked and the topics that have been studied, or a look at the key concepts and categories that have been developed and used, or even a look at methodological and methods that are used. The canon/classic studies.
LibGuides: Doing the literature review: Writing & structuring
Writing and structuring. Structure. Organization of the chapter (s) Finding your voice! Rewriting your draft. Making a plan early in the process of designing the literature review helps to keep your writing focussed and on schedule. Researching the deadlines, resources, and constraints at university, graduate school and faculty levels will ...
What is a Literature Review?
A literature review is a survey of scholarly sources on a specific topic. It provides an overview of current knowledge, allowing you to identify relevant theories, methods, and gaps in the existing research. There are five key steps to writing a literature review: Search for relevant literature. Evaluate sources. Identify themes, debates and gaps.
How To Write A Literature Review (+ Free Template)
Okay - with the why out the way, let's move on to the how. As mentioned above, writing your literature review is a process, which I'll break down into three steps: Finding the most suitable literature. Understanding, distilling and organising the literature. Planning and writing up your literature review chapter.
Structured literature reviews
This is a step-by-step guide aimed at Master's students undertaking a structured literature review as part of their Master's thesis. There are several different kinds of literature reviews, but any literature review typically includes an extensive literature search. Whenever a systematic approach is used, the literature search features a ...
Structuring a literature review
Structuring a literature review. In general, literature reviews are structured in a similar way to a standard essay, with an introduction, a body and a conclusion. These are key structural elements. Additionally, a stand-alone extended literature review has an abstract. Throughout, headings and subheadings are used to divide up the literature ...
Structuring your literature review
While you are likely to refer to the literature throughout the thesis (e.g. when providing a rationale for the study, justifying your methodology, or linking your discussion back to the literature), remember that the literature review performs a specific function, which we saw in the section on the purposes of the literature review, and therefore usually appears as a unified and substantial ...
PDF Structuring the Literature Review
There is no single, conventional way to structure a literature review. However, there are a range of standard approaches that you can choose from to give your Literature Review an overall shape. The structure you select will depend on the aims and purpose of your Literature Review as well as the literature that exists.
Ten Simple Rules for Writing a Literature Review
Literature reviews are in great demand in most scientific fields. Their need stems from the ever-increasing output of scientific publications .For example, compared to 1991, in 2008 three, eight, and forty times more papers were indexed in Web of Science on malaria, obesity, and biodiversity, respectively .Given such mountains of papers, scientists cannot be expected to examine in detail every ...
Academic writing: What is a literature review?
In writing the literature review, your purpose is to convey to your reader what knowledge and ideas have been established on a topic, and what their strengths and weaknesses are. Critically read and annotate your sources with your research question or central issue in mind. Effective annotations. summarize the "gist" or main ideas of the ...
Writing a Literature Review
A literature review is a document or section of a document that collects key sources on a topic and discusses those sources in conversation with each other (also called synthesis ). The lit review is an important genre in many disciplines, not just literature (i.e., the study of works of literature such as novels and plays).
Organising ideas in the body of your literature review
Organising ideas in the body of your literature review Photo by Hannah Olinger on Unsplash. As discussed in the previous section, the body of your literature review needs to provide an account of the major themes, arguments and debates found in the literature and to articulate how these relate to each other and to your own research.
PDF Structuring the Literature Review
Review an overall shape. The structure you select will depend on the aims and purpose of your Literature Review as well as the literature that exists. The function of your literature review Every literature review needs to show how the research problem you're investigating arose, and give a critical overview of how it, or aspects of it, have ...
Guidance on writing a literature review… : r/UKmidwives
It's my final assignment at college and unfortunately my tutor is nothing short of useless. I haven't got a clue what I'm doing, I'm not sure how to conduct/format a literature review. I would imagine it's good practice for university but we haven't received a spot of guidance, so I'd be super grateful of any advice. Thanks guys
John Barth, towering literary figure and revered mentor, dies at 93
John Barth, A&S '51, '52 (MA), groundbreaking and prolific author, revered teacher, and professor emeritus in The Writing Seminars at Johns Hopkins University, died Tuesday. He was 93. Best known for his postmodernist, unpredictable fiction and his exacting and generous teaching, Barth served on the ...

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Doing the literature review: Writing & structuring

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How To Write An A-Grade Literature Review

Overview: The Literature Review Process

But first, the “why”…

Step 1: Find the relevant literature

Method 1 – Google Scholar Scrubbing

Method 2 – University Database Scrounging

Method 3 – Journal Article Snowballing

Method 4 – Dissertation Scavenging

Need a helping hand?

Step 2: Log, catalogue and synthesise

2.1 – Log the reference information

2.2 – Build an organised catalogue

2.3 – Digest and synthesise

Step 3: Outline and write it up!

3.1 – Draw up your outline

3.2 – Get writing

Literature Review Example

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Structured literature reviews – A guide for students

Step 1: Formulate and delimit your research question

PICO & PEO

Step 2: Find search terms and create search blocks

Test search - find keywords and narrow down your topic

Find subject headings

Create search blocks

Download worksheet

Step 3: Search in a structured way

Example: How subject headings may differ between databases

Example: A search query that contains AND, OR, and parentheses