Bluebook Citation Style (21st ed.)

The Bluebook style is generally used for legal documents in the United States and is rare even for us, who work on a variety of papers. It features detailed descriptions of how different documents such as judicial opinions, arbitrations, and other materials should be cited. It also features forms for most other resources, which makes it a fully functional citation style. This guide will help you understand the unique nature of Bluebook and apply it in your legal writing to impress educators.

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This guide is developed in line with The Bluebook: A Uniform System of Citation (the Columbia Law Review Association, the Harvard Law Review Association, the University of Pennsylvania Law Review, and the Yale Law Journal ed., 21st ed. 2020).

Table of Contents
  1. What is Bluebook Citation Style?
  2. Why You Need to Cite Your Sources
  3. General Principles of Bluebook Formatting
    1. Notes on Bluebook Citations
    1. Bluebook Legal Citation
    2. Bluebook Citation for Books, Reports, and Other Non-periodical Materials
    3. Bluebook Article Citation
    4. Bluebook Citation Websites and Electronic Media
    5. Bluebook Citation for Other Sources

    What is Bluebook Citation Style?

    The Bluebook style is exclusively used for legal papers, so it can be somewhat complicated due to its focus on simple citations of various court documents. The form is a blend of in-text and footnote-based formats as its citations are located in the text but appear more similar to footnote-based ones. You have to provide the author’s full name, the name of the book, the year of publication, and the page number for the relevant quotation or citation. As such, Bluebook shares some similarities with most other citation styles while closely emulating few to none.

    Why You Need to Cite Your Sources

    You may be familiar with the need to cite information, but many places also require you to follow a strict guide and a specific style while doing so. Here are some reasons why both of these aspects are critical for your writing and overall career:

    General Principles of Bluebook Formatting

    Notes on Bluebook Citations

    Example of CiteTotal Bluebook Notes.

    Bluebook Footnote Citation

    Bluebook Legal Citation

    Cases

    American Hospital Association v. Becerra, 596 U.S. 137, 145-146 (2022)

    When citing legal cases, you need to include the following information (in the given order):

    If a decision has not been reached yet, include as much information as you can in place of the date of decision. For example, if a case was filed but not decided, include the filing date. If the case involves an interim order, whether published or unpublished, include an appropriate mark (order granting preliminary injunction) at the end of the citation in parentheses.

    Constitutions

    U.S. Const. amend. §1.
    Wash Const. art. II, § 11, cl. 4.

    When citing constitutions, include the following information (in the given order):

    Note: a short form other than id. is not allowed when citing constitutions

    Statutes

    The Coronavirus Aid, Relief, and Economic Security Act, 2115 § 1 (2020)

    CARES Act 2115 § 1

    If you need to cite a statute, such as an act, use the following data (in the given order):

    Bills and Resolutions

    H.R. Res. 117, 117th Cong. (2023)
    S. Res. 59, 118th Cong. (2023)

    For bills and resolutions, use the following:

    Hearings

    Building Regional Innovation Economies Part II, Hearing before the Subcomm. on Research and Technology of the Comm. on Science, Space, and Technology of the House of Representatives, 117th Cong. (2022)

    Bluebook Citation for Books, Reports, and Other Non-periodical Materials

    As a rule, when citing books, reports, and similar sources, you will need to provide:

    When there are two authors, separate them by an ampersand. For three and more authors, you may either list all or write the first author and add ‘et al.’

    Following are some examples of different sources cited in the Bluebook format.

    Book with one or two authors

    Alexandre Kiss & Dina Shelton, International Environmental Law 201 (3rd ed. 2021).

    Book with more than two authors

    Robert V. Percival et al., Environmental Regulation: Law, Science, and Policy 133 (9th ed. 2022).

    Or you may list all authors:

    Robert V. Percival, Christopher H. Schroeder, Alan S. Miller & James P. Leape, Environmental Regulation: Law, Science, and Policy 137 (9th ed. 2022).

    Book with editor or translator

    The Making of Environmental Law 155 (Richard J. Lazarus ed., 2023).

    Book with no author

    Environmental Law in Taiwan 37-38 (Wolters Kluwer Law & Business 2023).

    Note: include a publisher in parentheses

    Multiple editions of the book

    Rosemary Rayfuse et al., Research Handbook on International Marine Environmental Law 15 (2nd ed. 2023).

    Chapter in an edited book

    Write the author’s full name followed by the title of the chapter in italics, then add a comma and the word ‘in’ in italics, and the title of the book. Make sure to note the page on which the chapter begins and any pages where specific material is taken from.

    Alexander Proelss, Fragmentation and Coherence in the Legal Framework for the Protection of the Marine Environment, in Research Handbook on International Marine Environmental Law 57, 61 (Rosemary Rayfuse et al. eds, 2nd ed. 2023).

    Bluebook Article Citation

    Scholarly journal article

    Wesley G. Jennings & Nicholas M. Perez, The Immediate Impact of COVID-19 on Law Enforcement in the United States, 45 Am. J. Crim. Just. 690, 698 (2020).

    For articles published in scholarly journals, include the following:

    When citing the same work more than once, use a shortened version: author’s last name, the word ‘supra’ in italics, the number of the note in which the full citation was given, and ‘at’ followed by page number.

    Short form: Jennings & Perez, supra note 5, at 699.

    Magazine Articles and Newspapers

    Anton Troianovski, Adam Entous & Michael Schwirtz. Ukraine-Russia Peace Is as Elusive as Ever. But in 2022 They Were Talking. N.Y. Times, June 15, 2024, at 1.

    For magazine and newspaper articles, provide the information as listed below:

    When citing the same work more than once, use a shortened version: author’s last name, the word ‘supra’ in italics, the number of the note in which the full citation was given, and ‘at’ followed by page number.

    Short form: Troianovski et al. supra note 8, at 2.

    Bluebook Citation Websites and Electronic Media

    The Bluebook citation handbook strongly advises against including electronic sources in the bibliography if they can be cited as a printed source. The following examples are for reference only, and you should still check if a printed version of a source is available before citing it as an electronic source.

    Web page

    i24NEWS, Turkey Helped Russia Foil Second Terrorist Attack in Moscow – Report, https://www.i24news.tv/en/news/international/artc-turkey-helped-russia-foil-second-terrorist-attack-in-moscow-report (last visited June 18, 2024).

    PDF document

    U.S. Centers for Disease Control and Prevention, Morbidity and Mortality Weekly Report (2024), https://www.cdc.gov/mmwr/volumes/73/wr/pdfs/mm7323a1-H.pdf

    Blogs

    Dave Owen, Juliana v. United States and the Passing of a Show Horse, Environmental Law Prof Blog (May 1, 2024), https://lawprofessors.typepad.com/environmental_law/2024/05/juliana-v-united-states-and-the-passing-of-a-show-horse.html.

    Bluebook Citation for Other Sources

    There are many other types of sources that you might be required to cite in the Bluebook format. Some examples will be included below. Sources that do not match any of the categories in the guide should be cited like the next best alternative included in the guide.

    Note: Short forms for these sources should be created using the abbreviations “supra” or “id.”

    Student-written law review materials

    Mary Goldsmith, Comment, A Critique of the Strict Liability Standard for Determining Child Support in Cases of Male Victims of Sexual Assault and Statutory Rape, 240 U. Pa. L. Rev. 197, 200 (2023).

    Proceedings, regular publications by institutes, and ABA section reports

    Sarah Smith et al., Active Learning in a Large Undergraduate Course, 116 ASEE Aɴɴ. Cᴏɴғ. Exᴘ. Pʀᴏᴄ. 284 (2023).

    Unpublished and forthcoming sources

    Timothy M.E. Davis, Pulmonary Function Trajectories Over 6 Years and Their Determinants in Type 2 Diabetes: The Fremantle Diabetes Study Phase II, 47 Diabetes Care (forthcoming Aug. 2024).

    E-mail correspondence

    E-mail from Jen McCallister, Dir. of Operations, Orange Electronics, to Hannah Blake, Mag. of Operations, Orange Electronics (June 25, 2024, 11:55 EST) (on file with author).

    Interviews

    Telephone interview with Brian Moynihan, CEO, Bank of America (May 25, 2024).
    Interview with Brian Moynihan, CEO, Bank of America, in New York (May 25, 2024).

    Working papers

    Jay P. Greene & Greg Forster, Public High School Graduation and College Readiness Rates in the United States 1 (Ctr. for Civic Innovation, Working Paper No. 3, 2003).

    Note: “Ctr. for Civic Innovation” is the name of the sponsoring organization.

    Tables and Figures in Bluebook Style

    The Bluebook citation style is somewhat unique in its laissez-faire approach to the formatting of your paper. It exists to ensure that your citations are accurate and precise and limits itself to that task. As such, you are free to format tables and figures however you see fit. Nevertheless, it is probably best to follow some other styling format, so this guide will provide an example using the Chicago style of formatting (see figure 1).

    Minnesota Supreme Court.

    Figure 1: Minnesota Supreme Court.

    Source: The Courthouse: A Guide to Planning and Design, ncsc.org, https://www.ncsc.org/__data/assets/image/0023/25583/courtrooms-1.jpeg (last visited May 19, 2024).

    Notably, Bluebook does not require the use of a bibliography, so a single mention of the reference in the text is sufficient. However, it has remarkably strict rules about referencing that you can find in the book that gives its name to the style. As many images and figures will be taken from online sources, you should remember a few basic guidelines. First, the format discourages the use of any strictly online resources. Second, if you are citing an electronic version of a print document, you can mention it as though you were using that print document. However, if that document is challenging to obtain, you should make it clear that you are using an electronic version in the reference. Lastly, you should think carefully before inserting tables or figures into a legal document, as they usually only contain formatted text.