Bluebook
style guide on legal citation
The Bluebook: A Uniform System of Citation is a style guide that prescribes the most widely used legal citation system in the United States. It is taught and used at a majority of law schools in the United States and is also used in a majority of federal courts. Legal publishers also use several "house" citation styles in their works.
The Bluebook is compiled by the Harvard Law Review, Columbia Law Review, Yale Law Journal, and University of Pennsylvania Law Review. Currently, it is in its 22nd edition (published May 2025). Its name was first used for the 6th edition (1939). Opinions have differed regarding its origins at Yale and Harvard Law Schools, with the latter long claiming credit.
The Supreme Court uses its own unique citation style in its opinions, even though most of the justices and their law clerks obtained their legal education at law schools that use The Bluebook. Furthermore, many state courts have their own citation rules that take precedence over the guide for documents filed with those courts. Some of the local rules are simple modifications to The Bluebook system.
Begin with the source’s own compact description: “Bluebook” is style guide on legal citation. The dossier treats that line as a proposition to test through Bluebook, style and guide, not as a finished interpretation.
Why this record matters
The phrase “style guide on legal citation” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 14, 2026. The linked authority identifier is Q8026. 1 of 2 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 2025 and 1939.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Bluebook”, its source revision and the description used here.
- Expand the search: follow Bluebook primary sources, Bluebook archive and Bluebook research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Bluebook”?
- Which institution is responsible for the underlying evidence?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “Bluebook” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.