APA

United States, . (1967). Copyright law revision: Hearings, Ninetieth Congress, first session, pursuant to S. Res. 37, on S.597. Washington: U.S.Govt.Print.Off.

Chicago

United States, . 1967. Copyright law revision: Hearings, Ninetieth Congress, first session, pursuant to S. Res. 37, on S.597. Washington: U.S.Govt.Print.Off.

Harvard

United States, . (1967). Copyright law revision: Hearings, Ninetieth Congress, first session, pursuant to S. Res. 37, on S.597. Washington: U.S.Govt.Print.Off.

MLA

United States, . Copyright law revision: Hearings, Ninetieth Congress, first session, pursuant to S. Res. 37, on S.597. Washington: U.S.Govt.Print.Off. 1967.