Bluebook Parentheticals Explained

A parenthetical carries information that the volume-reporter-page-court-date string cannot. There are three functional families: explanatory parentheticals that tell the reader why the cited source supports your proposition; weight-of-authority parentheticals that tell the reader how much the source counts (en banc, per curiam, dissenting, dictum); and quotation parentheticals that account for what you did to the quoted text or where the quoted text originally came from.

Rule 1.2 ties parentheticals to signals. After a bare citation or "see," a parenthetical is optional — use one when the connection between your sentence and the case is not obvious from the case name and your text. After "cf.," "but cf.," and "compare ... with ...," the Bluebook strongly recommends an explanatory parenthetical, because those signals are meaningless without one. After "see generally," a parenthetical is encouraged. A good working rule for memos and briefs: if you use "cf." or "compare," you owe the reader a parenthetical, period.

The court-and-date parenthetical — (9th Cir. 2019), (S.D.N.Y. 2020), (2000) for the Supreme Court — is technically a parenthetical too, governed by Rules 10.4 and 10.5. It always comes first, and everything discussed below stacks after it.

Rule 1.5(a) is the core: start with a present participle, do not capitalize the first word, and do not put a period inside the closing parenthesis. So: (holding that a warrantless blood draw requires exigent circumstances), (rejecting the plaintiff's reliance-based theory), (collecting cases). Not: (The court held that ...).

There are two recognized departures. First, if a short phrase is clearer than a participial clause, use the phrase — (per curiam), (dictum), (alternative holding), (emphasis added). Second, if your parenthetical is a quotation of one or more complete sentences, keep the quotation marks, capitalize the first word, and put the final punctuation inside the quotation marks: ("Speech is powerful."). A quoted fragment, by contrast, gets folded into a participial clause: (noting that the statute reaches "any person acting under color of law").

Substance matters more than form. A parenthetical that says (discussing qualified immunity) is worthless; a parenthetical that says (granting immunity because no case had clearly established that a warning was required before deploying a police dog) does work. Keep it to one clause if you can. If your parenthetical runs past roughly two lines, the point probably belongs in your text as a case description instead.

Rule 1.5(b) fixes the sequence, and this is one of the most commonly missed rules in journal write-on competitions. The order runs: date parenthetical; (en banc); the judge parenthetical, such as (Scalia, J., concurring); (plurality opinion); (per curiam); (alteration in original); (emphasis added); (footnote omitted); (citation omitted); (quoting ...); (internal quotation marks omitted); (citing ...); then the explanatory parenthetical; then any prior or subsequent history.

The takeaway you should internalize: weight-of-authority parentheticals come before quotation-housekeeping parentheticals, and your explanatory parenthetical comes last, right before history. Students routinely put the explanatory parenthetical first because it feels most important. It goes last.

Because editions renumber and occasionally adjust this list, open Rule 1.5(b) in whatever edition your school assigned and confirm the sequence before a graded assignment.

Rule 10.6(a) requires you to flag anything that makes the cited material less than a straightforward majority holding. The standard set includes (en banc), (per curiam), (plurality opinion), (mem.), (Kagan, J., dissenting), (Gorsuch, J., concurring in the judgment), (Alito, J., concurring in part and dissenting in part), (dictum), and (unpublished table decision). If you cite page 145 of a dissent as though it were the opinion of the court, that is a substantive misrepresentation, not a formatting slip — and it is the kind of error a judge remembers.

Note the judge parenthetical format: last name, comma, "J." (or "C.J."), comma, then the role in lowercase. Multiple judges use "JJ." — (Breyer & Kagan, JJ., dissenting). A plurality opinion should be flagged so the reader knows to run the Marks analysis from Marks v. United States, 430 U.S. 188 (1977), before treating it as binding.

You can also use a parenthetical to note vote counts or unusual posture when it matters to your argument, such as (5-4 decision) or (affirming by an equally divided Court), but do not clutter every cite with this.

When you quote a source that is itself quoting another source, Rule 1.6(c) requires a "quoting" parenthetical with a full citation to the inner source. When you cite a case that in turn cites the authority you actually want to invoke, use "citing" the same way. These parentheticals nest: the inner citation gets its own court-and-date parenthetical inside your parenthetical, which is why they get long fast.

Rule 5.2 governs changes to quoted text. Omitted citations or footnotes inside a quotation get (citation omitted) or (footnote omitted). Italics you supplied get (emphasis added); italics already in the original that you want to disclaim get (emphasis in original) only if there is a risk of confusion. Alterations inside brackets that were already in the source you copied get (alteration in original). If you drop the inner quotation marks from quoted-within-quoted material, say (internal quotation marks omitted).

"(cleaned up)" collapses several of these into one. It comes from Jack Metzler's 2017 article Cleaning Up Quotations in the Journal of Appellate Practice and Process, and it signals that you removed internal quotation marks, brackets, ellipses, and citations without changing the meaning. It is not a Bluebook rule through the 21st edition, but courts up to and including the Supreme Court have used it — Justice Thomas's opinion in Brownback v. King (2021) is the usual example. Use it in practice if your judge or supervising attorney does. Do not use it on a law school assignment or write-on competition unless the instructions permit it.

Variation is real and it is driven by three things. First, the citation manual your school uses: some legal writing programs teach ALWD Guide to Legal Citation instead of the Bluebook, and while ALWD's parenthetical guidance is substantively close, the rule numbers differ, so never cite a rule number from the wrong manual. Second, court rules: many state and federal courts have local citation rules that override the Bluebook for briefs, and some appellate courts have formally blessed or discouraged "(cleaned up)." Third, journal style sheets: law reviews vary on parenthetical length, whether "see" plus parenthetical is preferred over a textual sentence, and how aggressively to use "(collecting cases)."

Also remember the Bluepages/whitepages split. In briefs and memos you follow the Bluepages, which use ordinary type conventions; in law review footnotes you follow the main rules with large and small caps. Parenthetical content and order are the same either way — the surrounding typography is not.

For non-case sources, parentheticals do other work: statutes take a publisher-and-date parenthetical like (West 2024) under Rule 12.3, and you may append (repealed 1996) or (codified as amended at 42 U.S.C. § 1983). Those follow the same last-in-line placement for any explanatory parenthetical you add.

Graders look for a short list of recurring mistakes. Capitalizing the first word of a participial parenthetical. Putting a period before the closing parenthesis when the parenthetical is not a full quoted sentence. Placing the explanatory parenthetical before (en banc) or (emphasis added). Failing to flag a dissent or concurrence. Using (citation omitted) when you actually omitted a footnote, or forgetting the parenthetical entirely after a "cf." signal.

One more: a parenthetical must be accurate. If you write (holding that ...), the cited page must contain a holding, not dicta. Substitute "noting," "observing," "suggesting," or "assuming without deciding" when that is what the court actually did. Opposing counsel and law review editors both check.