APA style of citing legal materials is based on
[The Bluebook: A Uniform System of Citation (16th ed.). (1996). Cambridge, MA: Harvard Law Review Association.]
U.S. Supreme Court Decisions
Name v. Name. Vol. number U.S. Page number. (Year).
Decisions of Lower Federal Courts
Name v. Name, Volume number Reporter abbreviation Page number (Court Name).
Name of Act § Section number, Volume number U.S.C. § Section number (Year).
Name of Act, Pub. L. No. Number , § Section number, Volume number Stat. Page number.
State and U.S. Constitutions
Co. Const. pt. 1, art. XV.
U.S. Const., amend. XIV, § 1.
Congressional and Federal Legislative Materials
Hearing - Title of Hearing, Number of Congress Cong. Page number (Year) (testimony of Name of witness).
Bill - Title, Bill or Resolution Number, Number of Congress Cong., Number of Session Sess. (Year).
Reports and Documents - Series abbreviation No. Number, Number of Congress Cong., Number of session Sess. Page number (Year).
Senate Report.: S. Rep.
Senate Document: S. Doc.
House Report: H.R. Rep.
House Document: H.R. Doc.