APA

United States, . (1967). Federal firearms legislation: Hearings, Ninetieth Congress, first session, pursuant to S. Res. 35, Ninetieth Congress. Washington: U.S. Govt. Print. Off.

Chicago

United States, . 1967. Federal firearms legislation: Hearings, Ninetieth Congress, first session, pursuant to S. Res. 35, Ninetieth Congress. Washington: U.S. Govt. Print. Off.

Harvard

United States, . (1967). Federal firearms legislation: Hearings, Ninetieth Congress, first session, pursuant to S. Res. 35, Ninetieth Congress. Washington: U.S. Govt. Print. Off.

MLA

United States, . Federal firearms legislation: Hearings, Ninetieth Congress, first session, pursuant to S. Res. 35, Ninetieth Congress. Washington: U.S. Govt. Print. Off. 1967.