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How To Write a Bibliography (Three Styles, Plus Examples)

Give credit where credit is due.

Writing a research paper involves a lot of work. Students need to consult a variety of sources to gather reliable information and ensure their points are well supported. Research papers include a bibliography, which can be a little tricky for students. Learn how to write a bibliography in multiple styles and find basic examples below.

IMPORTANT: Each style guide has its own very specific rules, and they often conflict with one another. Additionally, each type of reference material has many possible formats, depending on a variety of factors. The overviews shown here are meant to guide students in writing basic bibliographies, but this information is by no means complete. Students should always refer directly to the preferred style guide to ensure they’re using the most up-to-date formats and styles.

What is a bibliography?

When you’re researching a paper, you’ll likely consult a wide variety of sources. You may quote some of these directly in your work, summarize some of the points they make, or simply use them to further the knowledge you need to write your paper. Since these ideas are not your own, it’s vital to give credit to the authors who originally wrote them. This list of sources, organized alphabetically, is called a bibliography.

A bibliography should include all the materials you consulted in your research, even if you don’t quote directly from them in your paper. These resources could include (but aren’t limited to):

• Books and e-books
• Periodicals like magazines or newspapers
• Online articles or websites
• Primary source documents like letters or official records

Bibliography vs. References

These two terms are sometimes used interchangeably, but they actually have different meanings. As noted above, a bibliography includes all the materials you used while researching your paper, whether or not you quote from them or refer to them directly in your writing.

A list of references only includes the materials you cite throughout your work. You might use direct quotes or summarize the information for the reader. Either way, you must ensure you give credit to the original author or document. This section can be titled “List of Works Cited” or simply “References.”

Your teacher may specify whether you should include a bibliography or a reference list. If they don’t, consider choosing a bibliography, to show all the works you used in researching your paper. This can help the reader see that your points are well supported, and allow them to do further reading on their own if they’re interested.

Bibliography vs. Citations

Citations refer to direct quotations from a text, woven into your own writing. There are a variety of ways to write citations, including footnotes and endnotes. These are generally shorter than the entries in a reference list or bibliography. Learn more about writing citations here.

What does a bibliography entry include?

Depending on the reference material, bibliography entries include a variety of information intended to help a reader locate the material if they want to refer to it themselves. These entries are listed in alphabetical order, and may include:

• Author/s or creator/s
• Publication date
• Volume and issue numbers
• Publisher and publication city
• Website URL

These entries don’t generally need to include specific page numbers or locations within the work (except for print magazine or journal articles). That type of information is usually only needed in a footnote or endnote citation.

What are the different bibliography styles?

In most cases, writers use one of three major style guides: APA (American Psychological Association), MLA (Modern Language Association), or The Chicago Manual of Style . There are many others as well, but these three are the most common choices for K–12 students.

Many teachers will state their preference for one style guide over another. If they don’t, you can choose your own preferred style. However, you should also use that guide for your entire paper, following their recommendations for punctuation, grammar, and more. This will ensure you are consistent throughout.

Below, you’ll learn how to write a simple bibliography using each of the three major style guides. We’ve included details for books and e-books, periodicals, and electronic sources like websites and videos. If the reference material type you need to include isn’t shown here, refer directly to the style guide you’re using.

APA Style Bibliography and Examples

Source: Verywell Mind

Technically, APA style calls for a list of references instead of a bibliography. If your teacher requires you to use the APA style guide , you can limit your reference list only to items you cite throughout your work.

How To Write a Bibliography (References) Using APA Style

Here are some general notes on writing an APA reference list:

• Title your bibliography section “References” and center the title on the top line of the page.
• Do not center your references; they should be left-aligned. For longer items, subsequent lines should use a hanging indent of 1/2 inch.
• Include all types of resources in the same list.
• Alphabetize your list by author or creator, last name first.
• Do not spell out the author/creator’s first or middle name; only use their initials.
• If there are multiple authors/creators, use an ampersand (&) before the final author/creator.
• Place the date in parentheses.
• Capitalize only the first word of the title and subtitle, unless the word would otherwise be capitalized (proper names, etc.).
• Italicize the titles of books, periodicals, or videos.
• For websites, include the full site information, including the http:// or https:// at the beginning.

Books and E-Books APA Bibliography Examples

For books, APA reference list entries use this format (only include the publisher’s website for e-books).

Last Name, First Initial. Middle Initial. (Publication date). Title with only first word capitalized . Publisher. Publisher’s website

• Wynn, S. (2020). City of London at war 1939–45 . Pen & Sword Military. https://www.pen-and-sword.co.uk/City-of-London-at-War-193945-Paperback/p/17299

Periodical APA Bibliography Examples

For journal or magazine articles, use this format. If you viewed the article online, include the URL at the end of the citation.

Last Name, First Initial. Middle Initial. (Publication date). Title of article. Magazine or Journal Title (Volume number) Issue number, page numbers. URL

• Bell, A. (2009). Landscapes of fear: Wartime London, 1939–1945. Journal of British Studies (48) 1, 153–175. https://www.jstor.org/stable/25482966

Here’s the format for newspapers. For print editions, include the page number/s. For online articles, include the full URL.

Last Name, First Initial. Middle Initial. (Year, Month Date) Title of article. Newspaper title. Page number/s. URL

• Blakemore, E. (2022, November 12) Researchers track down two copies of fossil destroyed by the Nazis.  The Washington Post. https://www.washingtonpost.com/science/2022/11/12/ichthyosaur-fossil-images-discovered/

Electronic APA Bibliography Examples

For articles with a specific author on a website, use this format.

Last Name, First Initial. Middle Initial. (Year, Month Date). Title . Site name. URL

• Wukovits, J. (2023, January 30). A World War II survivor recalls the London Blitz . British Heritage . https://britishheritage.com/history/world-war-ii-survivor-london-blitz

When an online article doesn’t include a specific author or date, list it like this:

Title . (Year, Month Date). Site name. Retrieved Month Date, Year, from URL

• Growing up in the Second World War . (n.d.). Imperial War Museums. Retrieved May 12, 2023, from https://www.iwm.org.uk/history/growing-up-in-the-second-world-war

When you need to list a YouTube video, use the name of the account that uploaded the video, and format it like this:

Name of Account. (Upload year, month day). Title [Video]. YouTube. URL

• War Stories. (2023, January 15). How did London survive the Blitz during WW2? | Cities at war: London | War stories [Video]. YouTube. https://youtu.be/uwY6JlCvbxc

For more information on writing APA bibliographies, see the APA Style Guide website.

APA Bibliography (Reference List) Example Pages

Source: Simply Psychology

More APA example pages:

• Western Australia Library Services APA References Example Page
• Ancilla College APA References Page Example
• Scribbr APA References Page Example

MLA Style Bibliography Examples

Source: PressBooks

MLA style calls for a Works Cited section, which includes all materials quoted or referred to in your paper. You may also include a Works Consulted section, including other reference sources you reviewed but didn’t directly cite. Together, these constitute a bibliography. If your teacher requests an MLA Style Guide bibliography, ask if you should include Works Consulted as well as Works Cited.

How To Write a Bibliography (Works Cited and Works Consulted) in MLA Style

For both MLA Works Cited and Works Consulted sections, use these general guidelines:

• Start your Works Cited list on a new page. If you include a Works Consulted list, start that on its own new page after the Works Cited section.
• Center the title (Works Cited or Works Consulted) in the middle of the line at the top of the page.
• Align the start of each source to the left margin, and use a hanging indent (1/2 inch) for the following lines of each source.
• Alphabetize your sources using the first word of the citation, usually the author’s last name.
• Include the author’s full name as listed, last name first.
• Capitalize titles using the standard MLA format.
• Leave off the http:// or https:// at the beginning of a URL.

Books and E-Books MLA Bibliography Examples

For books, MLA reference list entries use this format. Add the URL at the end for e-books.

Last Name, First Name Middle Name. Title . Publisher, Date. URL

• Wynn, Stephen. City of London at War 1939–45 . Pen & Sword Military, 2020. www.pen-and-sword.co.uk/City-of-London-at-War-193945-Paperback/p/17299

Periodical MLA Bibliography Examples

Here’s the style format for magazines, journals, and newspapers. For online articles, add the URL at the end of the listing.

For magazines and journals:

Last Name, First Name. “Title: Subtitle.” Name of Journal , volume number, issue number, Date of Publication, First Page Number–Last Page Number.

• Bell, Amy. “Landscapes of Fear: Wartime London, 1939–1945.” Journal of British Studies , vol. 48, no. 1, pp. 153–175. www.jstor.org/stable/25482966

When citing newspapers, include the page number/s for print editions or the URL for online articles.

Last Name, First Name. “Title of article.” Newspaper title. Page number/s. Year, month day. Page number or URL

• Blakemore, Erin. “Researchers Track Down Two Copies of Fossil Destroyed by the Nazis.” The Washington Post. 2022, Nov. 12. www.washingtonpost.com/science/2022/11/12/ichthyosaur-fossil-images-discovered/

Electronic MLA Bibliography Examples

Last Name, First Name. Year. “Title.” Month Day, Year published. URL

• Wukovits, John. 2023. “A World War II Survivor Recalls the London Blitz.” January 30,   2023. https://britishheritage.com/history/world-war-ii-survivor-london-blitz

Website. n.d. “Title.” Accessed Day Month Year. URL.

• Imperial War Museum. n.d. “Growing Up in the Second World War.” Accessed May 9, 2023. https://www.iwm.org.uk/history/growing-up-in-the-second-world-war.

Here’s how to list YouTube and other online videos.

Creator, if available. “Title of Video.” Website. Uploaded by Username, Day Month Year. URL.

• “How did London survive the Blitz during WW2? | Cities at war: London | War stories.” YouTube . Uploaded by War Stories, 15 Jan. 2023. youtu.be/uwY6JlCvbxc.

For more information on writing MLA style bibliographies, see the MLA Style website.

MLA Bibliography (Works Cited) Example Pages

Source: The Visual Communication Guy

More MLA example pages:

• Writing Commons Sample Works Cited Page
• Scribbr MLA Works Cited Sample Page
• Montana State University MLA Works Cited Page

Chicago Manual of Style Bibliography Examples

The Chicago Manual of Style (sometimes called “Turabian”) actually has two options for citing reference material : Notes and Bibliography and Author-Date. Regardless of which you use, you’ll need a complete detailed list of reference items at the end of your paper. The examples below demonstrate how to write that list.

How To Write a Bibliography Using The Chicago Manual of Style

Source: South Texas College

Here are some general notes on writing a Chicago -style bibliography:

• You may title it “Bibliography” or “References.” Center this title at the top of the page and add two blank lines before the first entry.
• Left-align each entry, with a hanging half-inch indent for subsequent lines of each entry.
• Single-space each entry, with a blank line between entries.
• Include the “http://” or “https://” at the beginning of URLs.

Books and E-Books Chicago Manual of Style Bibliography Examples

For books, Chicago -style reference list entries use this format. (For print books, leave off the information about how the book was accessed.)

Last Name, First Name Middle Name. Title . City of Publication: Publisher, Date. How e-book was accessed.

• Wynn, Stephen. City of London at War 1939–45 . Yorkshire: Pen & Sword Military, 2020. Kindle edition.

Periodical Chicago Manual of Style Bibliography Examples

For journal and magazine articles, use this format.

Last Name, First Name. Year of Publication. “Title: Subtitle.” Name of Journal , Volume Number, issue number, First Page Number–Last Page Number. URL.

• Bell, Amy. 2009. “Landscapes of Fear: Wartime London, 1939–1945.” Journal of British Studies, 48 no. 1, 153–175. https://www.jstor.org/stable/25482966.

When citing newspapers, include the URL for online articles.

Last Name, First Name. Year of Publication. “Title: Subtitle.” Name of Newspaper , Month day, year. URL.

• Blakemore, Erin. 2022. “Researchers Track Down Two Copies of Fossil Destroyed by the Nazis.” The Washington Post , November 12, 2022. https://www.washingtonpost.com/science/2022/11/12/ichthyosaur-fossil-images-discovered/.

Electronic Chicago Manual of Style Bibliography Examples

Last Name, First Name Middle Name. “Title.” Site Name . Year, Month Day. URL.

• Wukovits, John. “A World War II Survivor Recalls the London Blitz.” British Heritage. 2023, Jan. 30. britishheritage.com/history/world-war-ii-survivor-london-blitz.

“Title.” Site Name . URL. Accessed Day Month Year.

• “Growing Up in the Second World War.” Imperial War Museums . www.iwm.org.uk/history/growing-up-in-the-second-world-war. Accessed May 9, 2023.

Creator or Username. “Title of Video.” Website video, length. Month Day, Year. URL.

• War Stories. “How Did London Survive the Blitz During WW2? | Cities at War: London | War Stories.” YouTube video, 51:25. January 15, 2023. https://youtu.be/uwY6JlCvbxc.

For more information on writing Chicago -style bibliographies, see the Chicago Manual of Style website.

Chicago Manual of Style Bibliography Example Pages

Source: Chicago Manual of Style

More Chicago example pages:

• Scribbr Chicago Style Bibliography Example
• Purdue Online Writing Lab CMOS Bibliography Page
• Bibcitation Sample Chicago Bibliography

Now that you know how to write a bibliography, take a look at the Best Websites for Teaching & Learning Writing .

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How to Write a Bibliography

Last Updated: March 12, 2024 Fact Checked

This article was co-authored by Diane Stubbs . Diane Stubbs is a Secondary English Teacher with over 22 years of experience teaching all high school grade levels and AP courses. She specializes in secondary education, classroom management, and educational technology. Diane earned a Bachelor of Arts in English from the University of Delaware and a Master of Education from Wesley College. There are 14 references cited in this article, which can be found at the bottom of the page. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed 653,188 times.

When you write a paper or a book, it's important to include a bibliography. A bibliography tells your reader what sources you've used. It lists all the books, articles, and other references you cited in or used to inform your work. Bibliographies are typically formatted according to one of three styles: American Psychological Association (APA) for scientific papers, Modern Language Association (MLA) for humanities papers, and Chicago Manual of Style (CMS) for the social sciences. Make sure you always check with your superior - whether a professor or boss - about which style they prefer.

Sample Bibliographies

Writing an APA Bibliography

• For example, if the author's name for a source is "John Adams Smith," you would list him as "Smith, J.A.," before listing the title of his piece.

• For example, if one source has twelve authors, and the seventh author is "Smith, J.A." and the twelfth is "Timothy, S.J.," you would list the first six authors, then write "Smith, J.A. ...Timothy, S.J."

• For example, if you have a World Health Organization Report without an author as one of your sources, you would write, "World Health Organization, "Report on Development Strategies in Developing Nations," July 1996."

• For example, an article citation might look like this: Jensen, O. E. (2012). "African Elephants." Savannah Quarterly , 2(1), 88.
• If the periodical the article comes from always begins with page number 1 (these types of periodicals are called “paginated by issue” periodicals, you should include the full page range of the article.
• If the article was retrieved online, end the citation with the words "Retrieved from" followed by the web address.

• Example: Worden, B. L. (1999). Echoing Eden. New York, New York: One Two Press.
• If the title is more than one word long and doesn’t contain any proper nouns, only the first word should be capitalized. Only the first letter of any subtitle should be capitalized as well.

• For example, a cited website might look like this: Quarry, R. R. (May 23, 2010). Wild Skies. Retrieved from https://wildskies.com.
• If no author is available, just start with the title. If no date is available, write "n.d."

Writing a MLA Bibliography

• You shouldn’t use an author’s title or degrees when listing their names in your bibliography. This is true even if they are listed that way on the source.

• For example, a book citation might look like this: Butler, Olivia. Parable of the Flower. Sacramento: Seed Press, 1996.

• For example, an article published in a scholarly journal might look like this: Green, Marsha. "Life in Costa Rica." Science Magazine vol. 1, no. 4, Mar 2013: 1-2.
• If you’re citing an article in a newspaper, you only need the name of the newspaper, followed by the date it was published, and the page number. A citation for that might look like this: Smith, Jennifer. “Tiny Tim Wins Award.” New York Times, 24 Dec 2017, p. A7.

• For example, a website citation might look like this: Jong, June. "How to Write an Essay." Writing Portal. 2 Aug. 2012. University of California. 23 Feb. 2013. <https://writingportal.com>
• Some websites, particularly academic ones, will have what’s called a DOI (digital object identifier). Write “doi:” in front of this number in place of the website’s url if a DOI is available.

Writing a CMS Bibliography

• Example: Skylar Marsh. "Walking on Water." Earth Magazine 4(2001): 23.

• For example, a book entry might look like this: Walter White. Space and Time . New York: London Press, 1982

• Example: University of California. "History of University of California." Last modified April 3, 2013. https://universityofcalifornia.com.
• Unless there is a publication date for the website you’re citing, you don’t need to include an access date. If you do have an access date, it goes at the end of the citation.

Expert Q&A

• Ask your teacher or professor which style they prefer you to use in your paper. Thanks Helpful 6 Not Helpful 2
• Be sure to include each and every source you reference in your work. Thanks Helpful 7 Not Helpful 5
• When writing a bibliography or a reference page, it really comes down to looking at an example and applying it to your own information. Thanks Helpful 0 Not Helpful 0

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• ↑ https://libguides.reading.ac.uk/citing-references/compilingbibliography
• ↑ https://morningside.libguides.com/APA7/references
• ↑ https://owl.english.purdue.edu/owl/resource/560/03/
• ↑ Cite articles
• ↑ https://owl.english.purdue.edu/owl/resource/560/08/
• ↑ https://owl.english.purdue.edu/owl/resource/560/10/
• ↑ https://www.scribbr.com/mla/works-cited/
• ↑ https://owl.english.purdue.edu/owl/resource/747/05/
• ↑ https://owl.purdue.edu/owl/research_and_citation/mla_style/mla_formatting_and_style_guide/mla_works_cited_page_basic_format.html
• ↑ https://owl.english.purdue.edu/owl/resource/747/06/
• ↑ https://owl.english.purdue.edu/owl/resource/747/07/
• ↑ https://owl.english.purdue.edu/owl/resource/717/02/
• ↑ https://owl.english.purdue.edu/owl/resource/717/03/
• ↑ https://owl.english.purdue.edu/owl/resource/717/05/

About This Article

To create an APA bibliography, title a separate page at the end of your paper "References." Then, use the authors' last names to organize your list alphabetically, for example by writing the author John Adam Smith as "Smith, J. A." If a source has more than 7 authors, list the first 7 before adding an ellipses. To cite an article, include the author's name, year of publication, article title, publication title, and page numbers. When citing a book, begin with the author's name, then the date of publication, title in Italics, location of the publisher, and publisher's name. For tips on how to write an MLA or CMS bibliography, keep reading! Did this summary help you? Yes No

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A publication of the harvard college writing program.

Harvard Guide to Using Sources 

• The Honor Code
• Bibliography

If you are using Chicago style footnotes or endnotes, you should include a bibliography at the end of your paper that provides complete citation information for all of the sources you cite in your paper. Bibliography entries are formatted differently from notes. For bibliography entries, you list the sources alphabetically by last name, so you will list the last name of the author or creator first in each entry. You should single-space within a bibliography entry and double-space between them. When an entry goes longer than one line, use a hanging indent of .5 inches for subsequent lines. Here’s a link to a sample bibliography that shows layout and spacing . You can find a sample of note format here .

Complete note vs. shortened note

Here’s an example of a complete note and a shortened version of a note for a book:

1. Karen Ho, Liquidated: An Ethnography of Wall Street (Durham: Duke University Press, 2009), 27-35.

1. Karen Ho, Liquidated , 27-35.

Note vs. Bibliography entry

The bibliography entry that corresponds with each note is very similar to the longer version of the note, except that the author’s last and first name are reversed in the bibliography entry. To see differences between note and bibliography entries for different types of sources, check this section of the Chicago Manual of Style .

For Liquidated , the bibliography entry would look like this:

Ho, Karen, Liquidated: An Ethnography of Wall Street . Durham: Duke University Press, 2009.

Citing a source with two or three authors

If you are citing a source with two or three authors, list their names in your note in the order they appear in the original source. In the bibliography, invert only the name of the first author and use “and” before the last named author.

1. Melissa Borja and Jacob Gibson, “Internationalism with Evangelical Characteristics: The Case of Evangelical Responses to Southeast Asian Refugees,” The Review of Faith & International Affairs 17, no. 3 (2019): 80-81, https://doi.org/10.1080/15570274.2019.1643983 .

Shortened note:

1. Borja and Gibson, “Internationalism with Evangelical Characteristics,” 80-81.

Bibliography:

Borja, Melissa, and Jacob Gibson. “Internationalism with Evangelical Characteristics: The Case of Evangelical Responses to Southeast Asian Refugees.” The Review of Faith & International Affairs 17. no. 3 (2019): 80–93. https://doi.org/10.1080/15570274.2019.1643983 .

Citing a source with more than three authors

If you are citing a source with more than three authors, include all of them in the bibliography, but only include the first one in the note, followed by et al. ( et al. is the shortened form of the Latin et alia , which means “and others”).

1. Justine M. Nagurney, et al., “Risk Factors for Disability After Emergency Department Discharge in Older Adults,” Academic Emergency Medicine 27, no. 12 (2020): 1271.

Short version of note:

1. Justine M. Nagurney, et al., “Risk Factors for Disability,” 1271.

Nagurney, Justine M., Ling Han, Linda Leo‐Summers, Heather G. Allore, Thomas M. Gill, and Ula Hwang. “Risk Factors for Disability After Emergency Department Discharge in Older Adults.” Academic Emergency Medicine 27, no. 12 (2020): 1270–78. https://doi.org/10.1111/acem.14088 .

Citing a book consulted online

If you are citing a book you consulted online, you should include a URL, DOI, or the name of the database where you found the book.

1. Karen Ho, Liquidated: An Ethnography of Wall Street (Durham: Duke University Press, 2009), 27-35, https://doi-org.ezp-prod1.hul.harvard.edu/10.1215/9780822391371 .

Bibliography entry:

Ho, Karen. Liquidated: An Ethnography of Wall Street . Durham: Duke University Press, 2009. https://doi-org.ezp-prod1.hul.harvard.edu/10.1215/9780822391371 .

Citing an e-book consulted outside of a database

If you are citing an e-book that you accessed outside of a database, you should indicate the format. If you read the book in a format without fixed page numbers (like Kindle, for example), you should not include the page numbers that you saw as you read. Instead, include chapter or section numbers, if possible.

1. Karen Ho, Liquidated: An Ethnography of Wall Street (Durham: Duke University Press, 2009), chap. 2, Kindle.

Ho, Karen. Liquidated: An Ethnography of Wall Street . Durham: Duke University Press, 2009. Kindle.

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• Harvard Style Bibliography | Format & Examples

Harvard Style Bibliography | Format & Examples

Published on 1 May 2020 by Jack Caulfield . Revised on 7 November 2022.

In Harvard style , the bibliography or reference list provides full references for the sources you used in your writing.

• A reference list consists of entries corresponding to your in-text citations .
• A bibliography sometimes also lists sources that you consulted for background research, but did not cite in your text.

The two terms are sometimes used interchangeably. If in doubt about which to include, check with your instructor or department.

The information you include in a reference varies depending on the type of source, but it usually includes the author, date, and title of the work, followed by details of where it was published. You can automatically generate accurate references using our free reference generator:

Harvard Reference Generator

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Table of contents

Formatting a harvard style bibliography, harvard reference examples, referencing sources with multiple authors, referencing sources with missing information, frequently asked questions about harvard bibliographies.

Sources are alphabetised by author last name. The heading ‘Reference list’ or ‘Bibliography’ appears at the top.

Each new source appears on a new line, and when an entry for a single source extends onto a second line, a hanging indent is used:

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Reference list or bibliography entries always start with the author’s last name and initial, the publication date and the title of the source. The other information required varies depending on the source type. Formats and examples for the most common source types are given below.

• Entire book
• Book chapter
• Translated book
• Edition of a book

Journal articles

• Print journal
• Online-only journal with DOI
• Online-only journal without DOI
• General web page
• Online article or blog
• Social media post

Newspapers and magazines

• Newspaper article
• Magazine article

When a source has up to three authors, list all of them in the order their names appear on the source. If there are four or more, give only the first name followed by ‘ et al. ’:

Sometimes a source won’t list all the information you need for your reference. Here’s what to do when you don’t know the publication date or author of a source.

Some online sources, as well as historical documents, may lack a clear publication date. In these cases, you can replace the date in the reference list entry with the words ‘no date’. With online sources, you still include an access date at the end:

When a source doesn’t list an author, you can often list a corporate source as an author instead, as with ‘Scribbr’ in the above example. When that’s not possible, begin the entry with the title instead of the author:

Though the terms are sometimes used interchangeably, there is a difference in meaning:

• A reference list only includes sources cited in the text – every entry corresponds to an in-text citation .
• A bibliography also includes other sources which were consulted during the research but not cited.

In Harvard referencing, up to three author names are included in an in-text citation or reference list entry. When there are four or more authors, include only the first, followed by ‘ et al. ’

In Harvard style referencing , to distinguish between two sources by the same author that were published in the same year, you add a different letter after the year for each source:

• (Smith, 2019a)
• (Smith, 2019b)

Add ‘a’ to the first one you cite, ‘b’ to the second, and so on. Do the same in your bibliography or reference list .

To create a hanging indent for your bibliography or reference list :

• Highlight all the entries
• Click on the arrow in the bottom-right corner of the ‘Paragraph’ tab in the top menu.
• In the pop-up window, under ‘Special’ in the ‘Indentation’ section, use the drop-down menu to select ‘Hanging’.
• Then close the window with ‘OK’.

Cite this Scribbr article

If you want to cite this source, you can copy and paste the citation or click the ‘Cite this Scribbr article’ button to automatically add the citation to our free Reference Generator.

Caulfield, J. (2022, November 07). Harvard Style Bibliography | Format & Examples. Scribbr. Retrieved 25 March 2024, from https://www.scribbr.co.uk/referencing/harvard-bibliography/

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How to Write a Bibliography (MLA, APA Examples)

Learn how to easily write a bibliography by following the format outlined in this article.

This resource will help your students properly cite different resources in the bibliography of a research paper, and how to format those citations, for books, encyclopedias, films, websites, and people.

What is a bibliography?

According to Infoplease.com, A bibliography is a list of the types of sources you used to get information for your report. It is included at the end of your report, on the last page (or last few pages).

What are the types of bibliography styles (MLA, APA, etc.)?

The 3 most common bibliography/citation styles are:

• MLA Style: The Modern Language Association works cited page style
• APA Style: The American Psychological Association style
• Chicago Style: The bibliography style defined by the Chicago Manual of Style

We’ll give examples of how to create bibliography entries in various styles further down in this article. 

What sources do you put in a bibliography?

An annotated bibliography should include a reference list of any sources you use in writing a research paper. Any printed sources from which you use a text citation, including books, websites, newspaper articles, journal articles, academic writing, online sources (such as PDFs), and magazines should be included in a reference list. In some cases, you may need or want to cite conversations or interviews, works of art, visual works such as movies, television shows, or documentaries - these (and many others) can also be included in a reference list.

How to get started writing your bibliography

You will find it easier to prepare your MLA, APA, or Chicago annotated bibliography if you keep track of each book, encyclopedia, journal article, webpage or online source you use as you are reading and taking notes. Start a preliminary, or draft, bibliography by listing on a separate sheet of paper all your sources. Note down the full title, author’s last name, place of publication, web address, publisher, and date of publication for each source.

Haven't started your paper yet and need an outline? These sample essay outlines include a research paper outline from an actual student paper.

How to write a bibliography step-by-step (with examples)

General Format: Author (last name first). Title of the book. Publisher, Date of publication.

MLA Style: Sibley, David Allen. What It’s Like to Be a Bird. From Flying to Nesting, Eating to Singing, What Birds Are Doing, and Why. Alfred A. Knopf, 2020.

APA Style: Sibley, D.A. (2020). What It’s Like to Be a Bird. From Flying to Nesting, Eating to Singing, What Birds Are Doing, and Why . Alfred A. Knopf.

Notes: Use periods, not commas, to separate the data in the entry. Use a hanging indent if the entry is longer than one line. For APA style, do not use the full author’s first name.

Websites or webpages:

  MLA Style: The SB Nation Family of Sites. Pension Plan Puppets: A Toronto Maple Leafs Blog, 2022, www.pensionplanpuppets.com. Accessed 15 Feb. 2022.

APA Style: American Heart Association. (2022, April 11). How to keep your dog’s heart healthy. https://www.heart.org/en/news/2022/04/11/how-to-keep-your-dogs-heart-healthy

Online news article from a newspaper site:

APA Style: Duehren, A. (2022, April 9). Janet Yellen faces challenge to keep pressure on Russia. Wall Street Journal. https://www.wsj.com/articles/janet-yellen-faces-challenge-to-keep-pressure-on-russia-while-addressing-global-consequences-11650366000

Print journal articles:

MLA Style: Booch, Grady. "Patterns in Object-Oriented Design." IEEE Software Engineering, vol. 6, no. 6, 2006, pp. 31-50.

APA Style: Booch, G. (2006). Patterns in object-oriented design. IEEE Software Engineering, 6(6), 31–50.

Note: It is suggested that you include a DOI and a webpage address when referencing either a printed journal article, and electronic journal article, or an journal article that appears in both formats. 

MLA Style: Gamma, Eric, and Peter A. Coad. “Exceptions to the Unified Modeling Language in Python Patterns.” IEEE Software Engineering, vol. 2, no. 6, 8 Mar. 2006, pp. 190-194. O’Reilly Software Engineering Library, https://doi.org/10.1006/se.20061. Accessed 26 May 2009.

APA Style: Masters, H., Barron, J., & Chanda, L. (2017). Motivational interviewing techniques for adolescent populations in substance abuse counseling. NAADAC Notes, 7(8), 7–13. https://www.naadac.com/notes/adolescent-techniques

ML:A Style: @Grady_Booch. “That’s a bold leap over plain old battery power cars.” Twitter, 13 Mar. 2013, 12:06 p.m., https://twitter.com/Grady_Booch/status/1516379006727188483.

APA Style: Westborough Library [@WestboroughLib]. (2022, April 12). Calling all 3rd through 5th grade kids! Join us for the Epic Writing Showdown! Winner receives a prize! Space is limited so register, today. loom.ly/ypaTG9Q [Tweet; thumbnail link to article]. Twitter. https://twitter.com/WestboroughLib/status/1516373550415896588.

Print magazine articles:

General format: Author (last name first), "Article Title." Name of magazine. Volume number, (Date): page numbers.

MLA Style: Stiteler, Sharon. "Tracking Red-Breasted Grosbeak Migration." Minnesota Bird Journal, 7 Sept. 2019, pp. 7-11.

APA Style: Jordan, Jennifer, "Filming at the Top of the World." Museum of Science Magazine. Volume 47, No. 1, (Winter 1998): p. 11.

Print newspaper articles:

General format: Author (last name first), "Article Title." Name of newspaper, city, state of publication. (date): edition if available, section, page number(s).

MLA Style: Adelman, Martin. "Augustus Announces Departure from City Manager Post." New York Times, late ed., 15 February 2020, p. A1

APA Style: Adelman, M. (2020, February 15). Augustus announced departure from city manager post. New York Times, A1.

Encyclopedias:

General Format: Encyclopedia Title, Edition Date. Volume Number, "Article Title," page numbers.

MLA Style: “Gorillas.” The Encyclopedia Brittanica. 15th ed. 2010.

APA Style: Encyclopedia Brittanica, Inc. (1997.) Gorillas. In The Encyclopedia Brittanica (15th ed., pp. 50-51). Encyclopedia Brittanica, Inc.

Personal interviews:

General format: Full name (last name first). Personal Interview. (Occupation.) Date of interview.

MLA Style: Smithfield, Joseph. Personal interview. 19 May 2014.

APA Style: APA does not require a formal citation for a personal interview. Published interviews from other sources should be cited accordingly.

Films and movies:

General format: Title, Director, Distributor, Year.

MLA Style: Fury. Directed by David Ayer, performances by Brad Pitt, Shia LaBeouf, Jon Bernthal, Sony Pictures, 2014.

APA Style: Ayer, D. (Director). (2014). Fury [Film]. Sony Pictures.

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Writing a Bibliography: APA Format

Below are standard formats and examples for basic bibliographic information recommended by the American Psychological Association (APA). For more information on the APA format, see http://www.apastyle.org .

Your list of works cited should begin at the end of the paper on a new page with the centered title, References . Alphabetize the entries in your list by the author's last name, using the letter-by-letter system (ignore spaces and other punctuation.) Only the initials of the first and middle names are given. If the author's name is unknown, alphabetize by the title, ignoring any A, An , or The .

For dates, spell out the names of months in the text of your paper, but abbreviate them in the list of works cited, except for May, June, and July. Use either the day-month-year style (22 July 1999) or the month-day-year style (July 22, 1999) and be consistent. With the month-day-year style, be sure to add a comma after the year unless another punctuation mark goes there.

Underlining or Italics ?

When reports were written on typewriters, the names of publications were underlined because most typewriters had no way to print italics. If you write a bibliography by hand, you should still underline the names of publications. But, if you use a computer, then publication names should be in italics as they are below. Always check with your instructor regarding their preference of using italics or underlining. Our examples use italics.

Hanging Indentation

All APA citations should use hanging indents, that is, the first line of an entry should be flush left, and the second and subsequent lines should be indented 1/2".

Capitalization, Abbreviation, and Punctuation

The APA guidelines specify using sentence-style capitalization for the titles of books or articles, so you should capitalize only the first word of a title and subtitle. The exceptions to this rule would be periodical titles and proper names in a title which should still be capitalized. The periodical title is run in title case, and is followed by the volume number which, with the title, is also italicized.

If there is more than one author, use an ampersand (&) before the name of the last author. If there are more than six authors, list only the first one and use et al . for the rest.

Place the date of publication in parentheses immediately after the name of the author. Place a period after the closing parenthesis. Do not italicize, underline, or put quotes around the titles of shorter works within longer works.

Format Examples

Allen, T. (1974). Vanishing wildlife of North America . Washington, D.C.: National Geographic Society.

Boorstin, D. (1992). The creators: A history of the heroes of the imagination . New York: Random House.

Nicol, A. M., & Pexman, P. M. (1999). Presenting your findings: A practical guide for creating tables . Washington, DC: American Psychological Association.

Searles, B., & Last, M. (1979). A reader's guide to science fiction . New York: Facts on File, Inc.

Toomer, J. (1988). Cane . Ed. Darwin T. Turner. New York: Norton.

Encyclopedia & Dictionary

Bergmann, P. G. (1993). Relativity. In The new encyclopedia britannica (Vol. 26, pp. 501-508). Chicago: Encyclopedia Britannica.

Merriam-Webster's collegiate dictionary (10th ed.). (1993). Springfield, MA: Merriam-Webster.

Pettingill, O. S., Jr. (1980). Falcon and Falconry. World book encyclopedia . (pp. 150-155). Chicago: World Book.

Tobias, R. (1991). Thurber, James. Encyclopedia americana . (p. 600). New York: Scholastic Library Publishing.

Magazine & Newspaper Articles

Harlow, H. F. (1983). Fundamentals for preparing psychology journal articles. Journal of Comparative and Physiological Psychology, 55 , 893-896.

Henry, W. A., III. (1990, April 9). Making the grade in today's schools. Time, 135 , 28-31.

Kalette, D. (1986, July 21). California town counts town to big quake. USA Today, 9 , p. A1.

Kanfer, S. (1986, July 21). Heard any good books lately? Time, 113 , 71-72.

Trillin, C. (1993, February 15). Culture shopping. New Yorker , pp. 48-51.

Website or Webpage

Online document: Author's name. (Date of publication). Title of work . Retrieved month day, year, from full URL Note: When citing Internet sources, refer to the specific website document. If a document is undated, use "n.d." (for no date) immediately after the document title. Break a lengthy URL that goes to another line after a slash or before a period. Continually check your references to online documents. There is no period following a URL. Note: If you cannot find some of this information, cite what is available.

Devitt, T. (2001, August 2). Lightning injures four at music festival. The Why? Files . Retrieved January 23, 2002, from http://whyfiles.org/137lightning/index.html

Dove, R. (1998). Lady freedom among us. The Electronic Text Center . Retrieved June 19, 1998, from Alderman Library, University of Virginia website: http://etext.lib.virginia.edu/subjects/afam.html Note: If a document is contained within a large and complex website (such as that for a university or a government agency), identify the host organization and the relevant program or department before giving the URL for the document itself. Precede the URL with a colon.

Fredrickson, B. L. (2000, March 7). Cultivating positive emotions to optimize health and well-being. Prevention & Treatment , 3, Article 0001a. Retrieved November 20, 2000, from http://journals.apa.org/prevention/volume3/pre0030001a.html

GVU's 8th WWW user survey . (n.d.). Retrieved August 8, 2000, from http://www.cc.gatech.edu/gvu/usersurveys/survey1997-10/

Health Canada. (2002, February). The safety of genetically modified food crops . Retrieved March 22, 2005, from http://www.hc-sc.gc.ca/english/protection/biologics_genetics/gen_mod_foods/genmodebk.html

Hilts, P. J. (1999, February 16). In forecasting their emotions, most people flunk out. New York Times . Retrieved November 21, 2000, from http://www.nytimes.com

APA Formatted Example Bibliography

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Cite Sources

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You’ve probably heard your teacher or professor talk about the importance of including citations in your research papers. But what exactly are citations? Why are they so important, and what are the different types? Read on for citation basics.

Here’s a table of contents for this guide:  

What is a Citation?

Citation examples, why do we have citations.

• Where Do We Have Citations?
• When Do I Make Citations?

Common Mistakes

5 tips for making the perfect citation, troubleshooting.

To begin, let’s examine what a citation actually is. A citation is how you let your readers know that you used information from outside sources in your work. It also describes those sources, and provides information that allows the reader to track them down. This information could be the author’s name, the publication date, or page numbers. The exact information included in the citation depends on the citation style you are using. Please see the citation manual for your chosen style for more specifics on how to make your citations in that style. Popular styles include MLA formatting , Chicago style, and APA style.

• How to Cite Google Images
• How to Cite Netflix
• How to Cite a PDF
• How to Cite Statistics
• How to Cite a Song
• How to Cite a Poem
• How to Cite a YouTube Video
• How to Cite a Podcast
• How to Cite a Book
• How to Cite an Inscription
• How to Cite a Quote

Having to write citations may seem like another boring step in the paper writing process. However, correctly citing sources in your research projects will ensure that you receive a better grade and create something that uniquely contributes to the subject area you are studying.

It doesn’t matter if you use MLA formatting , APA formatting, or any other citation style. Citing sources is something you should always do.

Here are just a few reasons why it is important for you to cite sources in your work:

Citations Provide Hard Evidence of Your Thesis/Ideas

Citing sources that back up your claim, otherwise known as your thesis statement, creates credibility for you as a researcher. It also opens up room for fact-checking and further research.

• Bonus points : If you can, find a way to cite a few sources that have the converse opinion or idea, and then demonstrate to the reader why you believe that viewpoint is wrong while backing up your claim up with sources. If you can do this, you are well on their way to winning over the reader to your side.
• Pro tip: Having many citations from a wide variety of sources related to your thesis indicates to your professor that you are working on a well-researched and respected subject.

Citations Give Credit to the Right People

Citing sources ensures that your reader or teacher can differentiate your original thoughts from the ideas in your sources and of other researchers in your subject area. This ensures that the sources you use receive proper credit for the author’s work, and that as the student, you receive deserved recognition for your unique contributions to the topic. Citations serve as a natural way to place your work within in the broader context of a subject area, and are an easy way for your teacher or professor to gauge your commitment to the project at hand. Going above and beyond in your work is always a good idea!

Citations Promote Originality and Prevent Plagiarism

The point of research projects is not to regurgitate information that can already be found elsewhere. We have Google for that! What your project should aim to do is promote an original idea or put a spin on an existing idea, and use credible sources to promote that idea. Copying or directly referencing a source without proper citations can lead to not only a poor grade, but accusations of academic dishonesty. By backing up your ideas with credible sources, you can easily avoid the trap of plagiarism, and promote further research on their topic. To help people find your unique perspective on your topic and create consistency throughout your work, it is always a good idea to use a specific, standardized citation style, such as APA format or MLA format.

Where Do We Have Citations, and What are the Types of Citations?

Citations typically can be found in two places: at the end of a paper in a bibliography or reference list, and within the text. The latter, sometimes called “in-text” citations, usually consist of a few details about the source, and are generally written in parenthesis at the end of the sentence where you referenced the source.

When Scout meets Boo Radley in To Kill a Mockingbird, she realizes that his reputation does not match his true character (Lee 85).

The citation in the reference list or bibliography corresponds with the in-text citation, and provides more holistic information about the source that you are citing. Publication information is included, as well as a list of all contributors to the source.

Lee, Harper. To Kill a Mockingbird. Perennial Modern Classics, 2006.

Note that each citation style has its own formatting rules regarding in-text and bibliographic citations. An APA citation will have similar information but look different from an MLA citation . Consult the style manual of your chosen citation style for more information.

When Should I Make Citations?

You should make a citation for a source whenever you:

● Directly quote a source ● Paraphrase information from a source ● Use an idea that is expressed in another source ● Make a specific reference to the work of another person

Let’s have a moment of silence for anyone out there who just received a graded paper filled with those dreaded red marks. Ugh. Nothing is worse than spending hours and hours pouring your heart and soul into a research paper, only to receive a failing grade or an accusation of plagiarism (gasp!) due to incorrect citations. It’s tough enough finding quality resources, analyzing them, and writing a high quality paper, but to receive marks off for incorrect citing totally crushes the soul.

We know there are so many rules to follow when it comes to citing sources. We’re here to highlight some of the most common citation mistakes students and scholars make when developing their research projects. Check out our top 5 below. Perhaps you’ll recognize a mistake or two you’ve been making in your own work.

If you’re looking for some extra help or guidance, check out the Citation Machine plagiarism and grammar checker. Write your paper, pop it into our “smart proofreader” and watch the magic happen. We’ll provide suggestions for citations and grammar edits so you can worry less about those dreaded red marks and more on your learning. Try it out now!

1. Forgetting to include in-text and parenthetical citations

You’ve found the perfect piece of information to include in your paper. Cool! As you’ve learned throughout school, you need to include a citation for that source in your bibliography or works cited list. Don’t forget to also include an in-text or parenthetical citation in the body of your project.

>Remember, every time outside information is added into a paper, you need to provide the reader with a glimpse as to where that information came from. You can do this with an in-text or parenthetical citation, which includes the author’s name in the sentence or directly after it, in parentheses. Depending on the citation style, you may also need to include the page number or year the source was published.

Here’s an example of how an MLA in-text citation could look in an assignment:

Stockett describes Celia as, “probably ten or fifteen years younger than me, twenty-two, twenty-three, and she’s real pretty” (37).

This excerpt is taken from page 37 in Kathryn Stockett’s book, The Help . In the works cited page at the end of the paper, the reader is provided with a full citation that shares the title of the book, the publisher, the year it was published, and possibly some other key pieces of information, depending on the citation style.

Every piece of information added into a paper needs two citations: a brief one in the body of the project and the full citation on the final page. Bam!

2. Period placement gone wrong

Inside? Outside? Outside and inside? It can be tricky to determine where to place those pesky little periods when including parenthetical citations.

For the majority of citation styles, the period is placed on the outside of the parentheses. Here’s a visual to help you out:

“It’s just that sometimes, our future is dictated by what we are, as opposed to what we want” (Sparks 59).

3. In-text and parenthetical citation overload

If you’re using the same reference over and over in one paragraph, it isn’t necessary to include an in-text or parenthetical citation after each sentence. Instead, save it for the end. The reader will be able to ascertain that all of the information from that single paragraph pertains to the individual in-text or parenthetical citation you’ve included.

4. Using the incorrect citation style or switching between two

Even though there are thousands (yes, thousands!) of citation styles available on Citation Machine, make sure to choose just one style for your project. Not sure whether to choose MLA formatting , APA , Chicago style format or another? Check to see if it’s included in the the assignment’s guidelines. Still not sure? Ask your teacher or school librarian. Whichever style you choose to roll with, make sure it’s consistent throughout the entire project. Remember, citations are included to help readers understand where information originated. If you choose to use various citation styles, it could cause some major confusion.

5. Problems with paraphrasing

A proper paraphrase involves taking someone else’s idea and rewriting it using your own words, in your own writing style. What it’s not is taking someone else’s idea and replacing the words with synonyms. Don’t be a synonym swapper. That’s plagiarism!

If you’re having a tough time trying to paraphrase another author’s words, try this out: Carefully read the text again. When you’re through, put it to the side, and think about what you just read. What was the author’s message? Now, rewrite it, using your own words and writing style. Remember to add an in-text or parenthetical citation at the end of the paraphrase and include the full citation in the works cited or reference page.

When you’re in a rush to meet a deadline and hand in your paper ASAP, it can be all too easy to make a mistake that can cost you big time. Citations are an often-overlooked component of a research paper that, when done correctly, can help you get your best grade yet. So how can you be sure that your citations are helping you achieve success? Here are some tips to take your research paper to the next level.

1. Include In-text or Parenthetical Citations When Paraphrasing

It can be tempting to just re-write a sentence from a source to include in your paper. But neglecting inclusion of a parenthetical, or in-text citation can lead to accusations of plagiarism. Being accused of committing plagiarism can not only impact your grade, but can put your enrollment in jeopardy as well. To avoid making this error, be sure to paraphrase carefully, and include a parenthetical or in-text citation in your paper each time you reference an outside source.

2. Periods (Almost) Always Go After the Parenthesis

Something as minor as an incorrectly placed period after a reference can lead to losing major points on your paper. In nearly every citation style with parenthetical citations, the period comes after the parenthesis, not before. Here is an example of a correctly placed period after a reference in APA format :

(Smith, 2005).

3. Be Consistent with Your Citation Style

Some classes require you use MLA format , while others require APA, while still others require Chicago Manual of Style . These specifications can be difficult to keep track of, but being consistent with your style is perhaps the easiest thing you can do to make sure you have well written citations. Double-checking your citations at the end of your paper before handing it in can lead to good last minute improvements.

4. All In-text and Parenthetical Citations Should Correspond with a Reference List Entry

In-text and parenthetical citations can be done while you are writing your paper, and are included each time you include information from an outside source. It is important to remember, however, that each time you do this, you should bear in mind that at the end of your paper in the works cited, bibliography, reference list, etc., there should be a corresponding longer reference to that same source that matches the in-text or parenthetical reference. When you are finished making your in-text and parenthetical references, use them to make a list of full citations you will need to include at the end of your paper.

5. Cite Properly, Not in Excess

While it is important to include citations in your paper, you shouldn’t be including them after each and every sentence you write. The important thing to remember is to cite only if you are including information from an outside source. This information should only be included if you feel that it backs up your claim effectively enough to the point where another researcher could potentially find that source and identify it as being related to your argument. If all the information in one paragraph you write refers to the same source, you only need to include one in-text or parenthetical citation in that paragraph, not after each individual sentence.

Solution #1: Identifying where to place a period in an in-text citation

1. If the in-text citation is at the end of the sentence or quotation, place a period after the citation (outside the parenthesis).

APA examples:

The results of Singh’s (2021) experiment were inconclusive (p. 42).

“The origin of the two variables could not be determined” (Singh, 2021, p. 42).

MLA examples:

The results of Singh’s experiment were inconclusive (42).

“The origin of the two variables could not be determined” (Singh 42).

2. Always use periods after the phrase “et al.”.

As Gregory Cheffsworth, et al. (2021) suggest, “sour cream can be used as a milk substitute whenever one is low on ingredients and willingness to go to the store” (p. 12).

“Sour cream can be used as a milk substitute whenever one is low on ingredients and willingness to go to the store” (Cheffsworth et al., 2021, p. 12).

As Gregory Cheffsworth, et al. suggest, “sour cream can be used as a milk substitute whenever one is low on ingredients and willingness to go to the store” (p. 12).

“Sour cream can be used as a milk substitute whenever one is low on ingredients and willingness to go to the store” (Cheffsworth et al. 12).

3. Block quotations in APA and MLA place the citation after the period.

A block quotation in APA is a quotation that is longer than forty words. The entire block quotations are indented by 0.5-inches.

            I wanted to make a casserole, but I soon realized that I did not have milk. However, as Gregory Cheffsworth, et al. (2021) suggest,

“Sour cream can be used as a milk substitute whenever one is low on ingredients and willingness to go to the store but, when one encounters this situation, they must be prepared to adapt to the differences in flavor profiles by incorporating new spices.” (p. 12)

In MLA, if the quotation is longer than four lines, use a block quotation by indenting the entire paragraph 0.5-inches.

MLA example:

            I wanted to make a casserole, but I soon realized that I did not have milk. However, as Gregory Cheffsworth, et al. suggest,

Sour cream can be used as a milk substitute whenever one is low on ingredients and willingness to go to the store but, when one encounters this situation, they must be prepared to adapt to the differences in flavor profiles by incorporating new spices. Depending on the selections, the sour cream’s natural taste can be emphasized or completely neutralized. As a result, one should not be afraid of the “sour” in sour cream. (12)

Solution #2: How to choose which citation style to use

• First, consult your syllabus, rubric, or writing guidelines. Most often, the expected citation style will be listed. If it is not, ask your teacher or the publication if they have a style preference.
• Use MLA style if you are writing within the humanities. This includes English literature, language, history, religion, and the arts.
• Use APA style if you are writing on the sciences, which includes subjects such as geology, education, or psychology.
• Use Chicago style if you are writing for business, history, or the fine arts.
• Note that some scientific genres require their own specific citation guide outside of these three widely used guides. For example, computer science frequently uses the IEEE citation guide.
• Look at sample papers or journal articles to see what is typically used.
• If all else fails, go to a library or your school’s writing center and ask for help.

Solution #3 When and how to create a direct quote versus a paraphrased citation

• For example, if you chose to directly quote information because the wittiness of an original excerpt is meaningful to your paper and is altered as a paraphrase.
• For example, when the quoted material is short compared to the rest of the sentence and does not add a significant amount of information. Use a paraphrase instead.
• Be aware that writing a direct quote without explaining it or further relating it to your topic can give the impression that you do not understand the information and are simply regurgitating the information.
• Avoid overusing direct quotes. Ideally, a paper is mostly written using your own words and thoughts.
• Use a paraphrase if you truly understand the idea/information and you can effectively relay the message in your own words.
• A paraphrase is also useful if you’re trying to synthesize a long quote or passage into a shorter passage.
• Before or after the paraphrase, you will need to discuss the information’s significance to your argument or paper.
• If you find that your paragraph is following the same word structure as the original statement, consider using a direct quote or consider rephrasing the sentence.
• One more reminder: Include an in-text citation to indicate that the original idea comes from another source.

Example of a direct quote:

            I wanted to make a casserole, but I soon realized that I did not have milk. However, as Gregory Cheffsworth (2021) suggests, “sour cream can be used as a milk substitute whenever one is low on ingredients and willingness to go to the store” (p. 47).

Example of a paraphrased citation:

            I wanted to make a casserole, but I soon realized that I did not have milk. However, I may be able to use sour cream instead of milk (Cheffsworth, 2021).

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How to Write a Bibliography: Referencing Styles Explained

• Distance Learning

Published: 13 July 2021

Author: Greg Robson

If you aren't familiar with writing bibliographies as part of your assignments, it can feel pretty confusing. Often, bibliographies are an afterthought or something left to the last minute. However, if you collect the information as you study, bibliographies can be a hassle-free part of your project. … Read More

Continue reading (2 minutes)...

If you aren't familiar with writing bibliographies as part of your assignments, it can feel pretty confusing. Often, bibliographies are an afterthought or something left to the last minute. However, if you collect the information as you study, bibliographies can be a hassle-free part of your project.  

In this guide, we explain exactly what a bibliography is, the different referencing styles and where to find the necessary information.  

What is a bibliography? 

A bibliography is the list of sources you used to build your assignment. You should include anything you actively referenced in your work and anything you read as part of your project's research and learning phase, even if you don't explicitly cite them within your project.    

What are primary and secondary sources? 

Your course teacher may request you order your bibliography using primary and secondary sources. This is much more simple than it sounds.   

A primary source refers to works created by people directly connected with the topic you are writing about. For example, if you are discussing a  psychological study , a primary source would be a psychologist who was actively involved in the study.  

On the other hand, secondary sources refer to any authors that discuss the topic you are studying but have no direct association.   

What should you include in a bibliography? 

We recommend compiling your bibliography as you study. Whether or not you directly reference sources, if you use them as part of your studies, they should be included. By collecting this information and building your bibliography as you go, you’ll find it far less stressful and one less thing to worry about.    

Information required for referencing printed sources: 

• The name of the author.  
• The title of the publication or article.  
• The date of publication.  
• The page number in the book where the citation can be found.  
• The name of the publishing company.  
• If you’re referencing a magazine or printed encyclopedia, record the volume number.  

Information required for referencing web sources: 

• The name of the author or editor.  
• The title of the webpage.  
• The company that created the webpage.  
• The URL of the piece.  
• The last date you visited the webpage.  

Where to find this information 

The information you need to include in your bibliography will be located in different places, which can be pretty frustrating, particularly if you’ve left your referencing to the last minute. However, there are a few specific places where this information is likely to be found:  

• The contents page (for magazine or journal articles).  
• The first, second or editorial page (for newspapers).  
• The header or footer of the webpage.  
• The contact, or about, page of the website.  

What are the different bibliography styles?  

In addition to structuring your bibliography correctly, depending on whether your source is a book, magazine, newspaper or webpage, you need to find out what bibliographic style is required.  

  Different course tutors will ask for a specific referencing style. This means that you simply present your source information in a different order.   

There are four main styles that you might be asked to follow: MLA, APA, Harvard or MHRA, and the chosen style will change your reference order:    

MRL reference order 

• Full name of the author (last name first).  
• The title of the book.  
• Publication place.  
• The name of the book publisher.  
• The publication date.  

APA/Harvard reference order  

• If using Harvard referencing, title your bibliography as ‘References’.  
• Author’s last name.  
• Author's first initial.  
• The publication date (in brackets).  
• The book title.  
• The publication place.  

MHRA reference order  

• Author’s first and last name  
• The title of the book  
• The publication date  

Points three to five should all be included in the same bracket.  

How to write a bibliography 

Whatever the style needed for your bibliography, there are some simple rules to follow for success:  

• Collect citation information as you go.  
• All citations must be listed alphabetically using the author's last name (if using the MHRA style, use the author’s first name).  
• If you can’t source the author's name, alphabetise using the book or article title.   
• If there are multiple authors of an article or book, alphabetise by the first author.  
• Consistency is key. All the information must be listed in exactly the same way.  
• Each source should begin on a new line.   
• Bibliographies should be placed at the end of your assignment.

If you’re unsure about constructing your bibliography, get in touch with your  tutor , who will be able to help.  

We hope this handy guide clears up any confusion you have about referencing styles. If you’re looking to level up your learning, our experienced learning advisers are here to help. For more information,  browse our complete range of courses  or give us a call on 0121 630 3000.  

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Title: can llms learn from previous mistakes investigating llms' errors to boost for reasoning.

Abstract: Recent works have shown the benefits to LLMs from fine-tuning golden-standard Chain-of-Thought (CoT) rationales or using them as correct examples in few-shot prompting. While humans can indeed imitate correct examples, learning from our mistakes is another vital aspect of human cognition. Hence, a question naturally arises: \textit{can LLMs learn and benefit from their mistakes, especially for their reasoning? } This study investigates this problem from both the prompting and model-tuning perspectives. We begin by introducing \textsc{CoTErrorSet}, a new benchmark with 609,432 questions, each designed with both correct and error references, and demonstrating the types and reasons for making such mistakes. To explore the effectiveness of those mistakes, we design two methods: (1) \textbf{Self-rethinking} prompting guides LLMs to rethink whether they have made similar previous mistakes; and (2) \textbf{Mistake tuning} involves finetuning models in both correct and incorrect reasoning domains, rather than only tuning models to learn ground truth in traditional methodology. We conduct a series of experiments to prove LLMs can obtain benefits from mistakes in both directions. Our two methods offer potentially cost-effective strategies by leveraging errors to enhance reasoning capabilities, which costs significantly less than creating meticulously hand-crafted golden references. We ultimately make a thorough analysis of the reasons behind LLMs' errors, which provides directions that future research needs to overcome. \textsc{CoTErrorSet} will be published soon on \texttt{Anonymity Link}.

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Nanomedicine as a multimodal therapeutic paradigm against cancer: on the way forward in advancing precision therapy

* Corresponding authors

a Institute for NanoBioTechnology, Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA E-mail: [email protected]

b Radiobiology, Department of Radiation Oncology & Homi Bhabha National Institute, Mumbai, India

Recent years have witnessed dramatic improvements in nanotechnology-based cancer therapeutics, and it continues to evolve from the use of conventional therapies (chemotherapy, surgery, and radiotherapy) to increasingly multi-complex approaches incorporating thermal energy-based tumor ablation ( e.g. magnetic hyperthermia and photothermal therapy), dynamic therapy ( e.g. photodynamic therapy), gene therapy, sonodynamic therapy ( e.g. ultrasound), immunotherapy, and more recently real-time treatment efficacy monitoring ( e.g. theranostic MRI-sensitive nanoparticles). Unlike monotherapy, these multimodal therapies (bimodal, i.e. , a combination of two therapies, and trimodal, i.e. , a combination of more than two therapies) incorporating nanoplatforms have tremendous potential to improve the tumor tissue penetration and retention of therapeutic agents through selective active/passive targeting effects. These combinatorial therapies can correspondingly alleviate drug response against hypoxic/acidic and immunosuppressive tumor microenvironments and promote/induce tumor cell death through various multi-mechanisms such as apoptosis, autophagy, and reactive oxygen-based cytotoxicity, e.g. , ferroptosis, etc. These multi-faced approaches such as targeting the tumor vasculature, neoangiogenic vessels, drug-resistant cancer stem cells (CSCs), preventing intra/extravasation to reduce metastatic growth, and modulation of antitumor immune responses work complementary to each other, enhancing treatment efficacy. In this review, we discuss recent advances in different nanotechnology-mediated synergistic/additive combination therapies, emphasizing their underlying mechanisms for improving cancer prognosis and survival outcomes. Additionally, significant challenges such as CSCs, hypoxia, immunosuppression, and distant/local metastasis associated with therapy resistance and tumor recurrences are reviewed. Furthermore, to improve the clinical precision of these multimodal nanoplatforms in cancer treatment, their successful bench-to-clinic translation with controlled and localized drug-release kinetics, maximizing the therapeutic window while addressing safety and regulatory concerns are discussed. As we advance further, exploiting these strategies in clinically more relevant models such as patient-derived xenografts and 3D organoids will pave the way for the application of precision therapy.

• This article is part of the themed collections: Recent Review Articles and Theranostic nanoplatforms for biomedicine

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P. Sandbhor, P. Palkar, S. Bhat, G. John and J. S. Goda, Nanoscale , 2024,  16 , 6330 DOI: 10.1039/D3NR06131K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page .

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• How to Cite a Website | MLA, APA & Chicago Examples

How to Cite a Website | MLA, APA & Chicago Examples

Published on March 5, 2021 by Jack Caulfield . Revised on January 17, 2024.

To cite a page from a website, you need a short in-text citation and a corresponding reference stating the author’s name, the date of publication, the title of the page, the website name, and the URL.

This information is presented differently in different citation styles. APA , MLA , and Chicago are the most commonly used styles.

Use the interactive example generator below to explore APA and MLA website citations.

Note that the format is slightly different for citing YouTube and other online video platforms, or for citing an image .

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Table of contents

Citing a website in mla style, citing a website in apa style, citing a website in chicago style, frequently asked questions about citations.

An MLA Works Cited entry for a webpage lists the author’s name , the title of the page (in quotation marks), the name of the site (in italics), the date of publication, and the URL.

The in-text citation usually just lists the author’s name. For a long page, you may specify a (shortened) section heading to locate the specific passage. Don’t use paragraph numbers unless they’re specifically numbered on the page.

The same format is used for blog posts and online articles from newspapers and magazines.

You can also use our free MLA Citation Generator to generate your website citations.

Generate accurate MLA citations with Scribbr

Citing a whole website.

When you cite an entire website rather than a specific page, include the author if one can be identified for the whole site (e.g. for a single-authored blog). Otherwise, just start with the site name.

List the copyright date displayed on the site; if there isn’t one, provide an access date after the URL.

Webpages with no author or date

When no author is listed, cite the organization as author only if it differs from the website name.

If the organization name is also the website name, start the Works Cited entry with the title instead, and use a shortened version of the title in the in-text citation.

When no publication date is listed, leave it out and include an access date at the end instead.

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An APA reference for a webpage lists the author’s last name and initials, the full date of publication, the title of the page (in italics), the website name (in plain text), and the URL.

The in-text citation lists the author’s last name and the year. If it’s a long page, you may include a locator to identify the quote or paraphrase (e.g. a paragraph number and/or section title).

Note that a general reference to an entire website doesn’t require a citation in APA Style; just include the URL in parentheses after you mention the site.

You can also use our free APA Citation Generator to create your webpage citations. Search for a URL to retrieve the details.

Generate accurate APA citations with Scribbr

Blog posts and online articles.

Blog posts follow a slightly different format: the title of the post is not italicized, and the name of the blog is.

The same format is used for online newspaper and magazine articles—but not for articles from news sites like Reuters and BBC News (see the previous example).

When a page has no author specified, list the name of the organization that created it instead (and omit it later if it’s the same as the website name).

When it doesn’t list a date of publication, use “n.d.” in place of the date. You can also include an access date if the page seems likely to change over time.

In Chicago notes and bibliography style, footnotes are used to cite sources. They refer to a bibliography at the end that lists all your sources in full.

A Chicago bibliography entry for a website lists the author’s name, the page title (in quotation marks), the website name, the publication date, and the URL.

Chicago also has an alternative author-date citation style . Examples of website citations in this style can be found here .

For blog posts and online articles from newspapers, the name of the publication is italicized. For a blog post, you should also add the word “blog” in parentheses, unless it’s already part of the blog’s name.

When a web source doesn’t list an author , you can usually begin your bibliography entry and short note with the name of the organization responsible. Don’t repeat it later if it’s also the name of the website. A full note should begin with the title instead.

When no publication or revision date is shown, include an access date instead in your bibliography entry.

The main elements included in website citations across APA , MLA , and Chicago style are the author, the date of publication, the page title, the website name, and the URL. The information is presented differently in each style.

In APA , MLA , and Chicago style citations for sources that don’t list a specific author (e.g. many websites ), you can usually list the organization responsible for the source as the author.

If the organization is the same as the website or publisher, you shouldn’t repeat it twice in your reference:

• In APA and Chicago, omit the website or publisher name later in the reference.
• In MLA, omit the author element at the start of the reference, and cite the source title instead.

If there’s no appropriate organization to list as author, you will usually have to begin the citation and reference entry with the title of the source instead.

When you want to cite a specific passage in a source without page numbers (e.g. an e-book or website ), all the main citation styles recommend using an alternate locator in your in-text citation . You might use a heading or chapter number, e.g. (Smith, 2016, ch. 1)

In APA Style , you can count the paragraph numbers in a text to identify a location by paragraph number. MLA and Chicago recommend that you only use paragraph numbers if they’re explicitly marked in the text.

For audiovisual sources (e.g. videos ), all styles recommend using a timestamp to show a specific point in the video when relevant.

Check if your university or course guidelines specify which citation style to use. If the choice is left up to you, consider which style is most commonly used in your field.

• APA Style is the most popular citation style, widely used in the social and behavioral sciences.
• MLA style is the second most popular, used mainly in the humanities.
• Chicago notes and bibliography style is also popular in the humanities, especially history.
• Chicago author-date style tends to be used in the sciences.

Other more specialized styles exist for certain fields, such as Bluebook and OSCOLA for law.

The most important thing is to choose one style and use it consistently throughout your text.

Cite this Scribbr article

If you want to cite this source, you can copy and paste the citation or click the “Cite this Scribbr article” button to automatically add the citation to our free Citation Generator.

Caulfield, J. (2024, January 17). How to Cite a Website | MLA, APA & Chicago Examples. Scribbr. Retrieved March 29, 2024, from https://www.scribbr.com/citing-sources/cite-a-website/

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