Which citation format is commonly used for citing statutes at the federal level?

The commonly used citation format for citing federal statutes is the title and section format. This method provides clarity and easy reference to specific laws within the United States Code (U.S.C.), which organizes federal statutes by title and section number. For instance, a citation may appear as "15 U.S.C. § 78," where "15" refers to the title and "78" refers to the specific section within that title. This format aids in precise identification of legal provisions and is standardized for legal writing and research, making it the preferred method among legal professionals for citing statutes at the federal level.

Other formats, such as section and paragraph or division and clause, are not typical for U.S. federal law citation. The act and law number format may be used in different contexts but does not align with the standard citation practices established for statutory references. Thus, the title and section format is essential for maintaining consistency and accuracy in legal documentation.