The United States Reports are the official record of the Supreme Court of the United States. They include rulings, orders, case tables, in alphabetical order both by the name of the petitioner and by the name of the respondent, and other proceedings. United States Reports, once printed and bound, are the final version of court opinions and cannot be changed.

Law reports or reporters are series of books that contain judicial opinions from a selection of case law decided by courts. When a particular judicial opinion is referenced, the law report series in which the opinion is printed will determine the case citation format.