Criticism of The Bluebook is not new.1See, e.g., A. Darby Dickerson, An Un-Uniform System of Citation: Surviving with the New Bluebook (Including Compendia of State and Federal Court Rules Concerning Citation Form), 26 Stetson L. Rev. 53, 57 (1996) (“[B]ecause of its complexity and insularity, the Bluebook has attracted challengers . . . .”); Carol M. Bast & Susan Harrell, Has The Bluebook Met Its Match? The ALWD Citation Manual, 92 L. Libr. J. 337, 342 (2000) (“The rules concerning case names are overly complex.”); Richard A. Posner, Reflections on Judging 96–97 (2013) (noting complexity and stating that “there are declining marginal returns to complexity”). The Bluebook is an arguable form of hazing, with a long and storied history of making first-year students cry.2Alex MacDonald, Citation Style Is a Cruel Mistress: A Review of the 21st Edition of The Bluebook, 20 Scribes J. Legal Writing 167, 169 (2022). Judge Posner’s denouncement of the text is perhaps the most famous; he wrote: “I have not read the nineteenth edition. I have dipped into it, much as one might dip one’s toes in a pail of freezing water. I am put in mind of Mr. Kurtz’s dying words in Heart of Darkness—‘The horror! The horror!’—and am tempted to end there.”3See Richard A. Posner, The Bluebook Blues, 120 Yale L.J. 850, 852 (2011).
The fact that the text is widely disliked makes it an easy scapegoat. That is not to say, however, that the criticism is undeserved.
Past criticism has typically focused on aspects of the book that relate to its usability, not whether the citation format it prescribes is appropriate.4See, e.g., Dickerson, supra note 1; Bast & Harrell, supra note 1. A notable exception to this pattern was the widespread condemnation of the sixteenth edition of The Bluebook, which changed the meaning of the signal “see” and the absence of a signal.5Christine Hurt, Network Effects and Legal Citation: How Antitrust Theory Predicts Who Will Build a Better Bluebook Mousetrap in the Age of Electronic Mice, 87 Iowa L. Rev. 1257, 1268–71 (2002). The response to this change “was so vehement that the House of Representatives of the Association of American Law Schools (AALS) passed a resolution at its January 1997 meeting condemning [the] changes . . . and encouraging its members, and law reviews, to use the signal rules in the Fifteenth Edition.”6Id. at 1270–71 (citing Pamela Lysaght & Grace Tonner, Bye-Bye Bluebook?, 79 Mich. B.J. 1058, 1058 (2000)).
Despite its unpopularity and the availability of other citation manuals,7See, e.g., Ass’n of Legal Writing Dirs. & Carolyn V. Williams, ALWD Guide to Legal Citation (7th ed. 2021); The Indigo Book: A Manual of Legal Citation (Christopher Jon Sprigman et al. eds., 2d ed. 2022). The Bluebook remains widely used at many law schools to teach legal citation format to law students, and it is relied on by law reviews and courts.8See C. Edward Good, Will The Bluebook Sing the Blues?, Trial, Jan. 2001, at 78, 79 (discussing widespread adoption of The Bluebook). While total sales volume is unknown, in fiscal year 2020, The Bluebook “made $1.2 million in net profits” and the text yielded $16 million in net profits from 2011–2020. Dan Stone, Harvard-Led Citation Cartel Rakes in Millions from Bluebook Manual Monopoly, Masks Profits, Substack: Daniel Stone (June 9, 2022), https://danielstone.substack.com/p/legal-bluebook-profits-havard-yale-columbia-penn [https://perma.cc/WHG7-LFN9].
The twenty-second edition of The Bluebook was released in May 2025.9See The Bluebook: A Uniform System of Citation, at VIII (Columbia Law Review Ass’n et al. eds., 22d ed. 2025) [hereinafter The Bluebook]. This new edition includes a new rule—Rule 18.3—that crafts a citation format for legal writers to use when citing generative artificial intelligence (“AI”). This Book Review focuses on The Bluebook’s new generative AI rule, and it concludes that the citation format that The Bluebook prescribes within Rule 18.3 is deeply flawed.10The author is cognizant that The Bluebook is the work product of second and third-year law students and appreciates their efforts toward improving the book. For an insider’s perspective regarding the drafting process, see M. Burke Craighead, The Bluebook: An Insider’s Perspective, 124 Mich. L. Rev. (forthcoming 2026), https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5271305 [https://perma.cc/DY37-S666].
This Book Review proceeds in three parts. First, it examines the purpose of citations in legal writing and identifies circumstances in which the citation of generative AI output is appropriate. Second, it considers what The Bluebook requires of authors using generative AI technology and why The Bluebook’s requirements are inappropriate, focusing on: (1) errors within Rule 18.3 itself; (2) the unreasonable burden Rule 18.3 imposes; (3) Rule 18.3’s incompatibility with how generative AI technology is actually used; and (4) how the requirements imposed by Rule 18.3 violate attorney-client confidentiality requirements and work product protections. Third, and finally, it discusses why The Bluebook’s flawed approach matters and how it might be addressed.
