United States. Congress. House. Committee on Science and Astronautics. Subcommittee on Space Science and Applications & ProQuest (Firm). (1968). 1969 NASA Authorization: Hearings before the United States House Committee on Science and Astronautics, Subcommittee on Space Science and Applications, Ninetieth Congress, second session, on Feb. 19-21, 26-29, 1968. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. House. Committee on Science and Astronautics. Subcommittee on Space Science and Applications and ProQuest (Firm). 1969 NASA Authorization: Hearings Before the United States House Committee on Science and Astronautics, Subcommittee on Space Science and Applications, Ninetieth Congress, Second Session, on Feb. 19-21, 26-29, 1968. Washington: U.S. G.P.O., 1968.
MLA (9th ed.) CitationUnited States. Congress. House. Committee on Science and Astronautics. Subcommittee on Space Science and Applications and ProQuest (Firm). 1969 NASA Authorization: Hearings Before the United States House Committee on Science and Astronautics, Subcommittee on Space Science and Applications, Ninetieth Congress, Second Session, on Feb. 19-21, 26-29, 1968. U.S. G.P.O., 1968.