When citing a U.S. Supreme Court case, you must cite to the official reporter, the United States Reports, if the case is published therein (Table 1, p.233).
A citation to a case in the United States Reports includes the following five elements:
Here is an example:
Roe v. Wade, 410 U.S. 113 (1973)
You may need to include a "pinpoint" citation, which is a citation to the page(s) on which the specific material referenced appears. If you need to include a pinpoint citation to, for example, a quotation or the holding of a case, add the page number after the first page.
Roe v. Wade, 410 U.S. 113, 164 (1973)
United States Reports is an official publication of the United States Government and the preferred reporter to cite for U.S. Supreme Court cases according to The Bluebook. However, there is generally a significant lag between when the Court decides a case and when it is published in the United States Reports. As of November 2017, for example, the most recent volume of the United States Reports contains cases decided in mid-2012. Therefore, you will often need to cite Supreme Court cases that are not yet published in the United States Reports.
In these instances, you cite to the case as published in one of the unofficial Supreme Court reporters, which are published more frequently: Supreme Court Reporter or United States Supreme Court Reports, Lawyers' Edition. The Bluebook dictates that you cite to the Supreme Court Reporter over the United States Supreme Court Reports--Lawyers' Edition (Table 1, p. 233). The volume and page numbers for each unofficial reporter will be different than those found in the United States Reports.
A citation to a case in the Supreme Court Reporter and the United States Supreme Court Reports, Lawyers' Edition has the same five elements as a citation to the United States Reports, except the reporter abbreviation and volume and page numbers are different. The abbreviation for the Supreme Court Reporter is "S. Ct." and the abbreviation for Lawyers' Edition is "L. Ed." or L. Ed. 2d". Here, for example, are citations to a case that was decided in 2014, but not yet published in the United States Reports as of 2017:
Riley v. California, 134 S. Ct. 2473 (2014)
Riley v. California, 189 L. Ed. 2d 430 (2014)
Unlike the U.S. Supreme Court, cases from the federal courts of appeals are not compiled in an official reporter. In fact, there is no official, government-published reporter for the federal courts of appeals (or federal district courts). Instead, many cases from the courts of appeals are published in West's Federal Reporter. If a court of appeals case is published in the Federal Reporter, The Bluebook dictates that you cite to it (Table 1, p. 234).
A citation to a court of appeals case in the Federal Reporter includes the following six elements:
Here is an example:
Universal City Studios, Inc. v. Corley, 273 F.3d 429 (2d Cir. 2001)
Another example appears in this guide under the main tab for Citing Cases.
Like the federal courts of appeals, cases from the federal district courts are not compiled in an official reporter. Instead, many cases from the district courts are published in West's Federal Supplement. If a district court case is published in the Federal Supplement, The Bluebook dictates that you cite to it (Table 1, p. 235).
A citation to a district court case in the Federal Supplement includes the following six elements:
Here is an example:
City of Millville v. Rock, 683 F. Supp. 2d 319 (D.N.J. 2010)
Specialized federal courts, such as the U.S. Bankruptcy Court or the U.S. Tax Court, have slightly different citation rules. Check Table 1 for guidance on how to cite materials from such courts.