APA

United States, . (1968). Long-range maritime program: Hearings, Ninetieth Congress, second session, on H.R. 13940 [and others]. Washington: U.S. Govt. Print. Off.

Chicago

United States, . 1968. Long-range maritime program: Hearings, Ninetieth Congress, second session, on H.R. 13940 [and others]. Washington: U.S. Govt. Print. Off.

Harvard

United States, . (1968). Long-range maritime program: Hearings, Ninetieth Congress, second session, on H.R. 13940 [and others]. Washington: U.S. Govt. Print. Off.

MLA

United States, . Long-range maritime program: Hearings, Ninetieth Congress, second session, on H.R. 13940 [and others]. Washington: U.S. Govt. Print. Off. 1968.