APA

United States, . (1973). Copyright law revision: Hearings, Ninety-third Congress, first session, pursuant to S. Res. 56 on S. 1361, July 31 and August 1, 1973. Washington: U.S. Govt. Print. Off.

Chicago

United States, . 1973. Copyright law revision: Hearings, Ninety-third Congress, first session, pursuant to S. Res. 56 on S. 1361, July 31 and August 1, 1973. Washington: U.S. Govt. Print. Off.

Harvard

United States, . (1973). Copyright law revision: Hearings, Ninety-third Congress, first session, pursuant to S. Res. 56 on S. 1361, July 31 and August 1, 1973. Washington: U.S. Govt. Print. Off.

MLA

United States, . Copyright law revision: Hearings, Ninety-third Congress, first session, pursuant to S. Res. 56 on S. 1361, July 31 and August 1, 1973. Washington: U.S. Govt. Print. Off. 1973.