United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Transportation and Aeronautics & ProQuest (Firm). (1968). High-Speed Ground Transportation -- Extension: Hearings before the United States House Committee on Interstate and Foreign Commerce, Subcommittee on Transportation and Aeronautics, Ninetieth Congress, second session, on June 12, 13, 1968. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Transportation and Aeronautics and ProQuest (Firm). High-Speed Ground Transportation -- Extension: Hearings Before the United States House Committee on Interstate and Foreign Commerce, Subcommittee on Transportation and Aeronautics, Ninetieth Congress, Second Session, on June 12, 13, 1968. Washington: U.S. G.P.O., 1968.
MLA (9th ed.) CitationUnited States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Transportation and Aeronautics and ProQuest (Firm). High-Speed Ground Transportation -- Extension: Hearings Before the United States House Committee on Interstate and Foreign Commerce, Subcommittee on Transportation and Aeronautics, Ninetieth Congress, Second Session, on June 12, 13, 1968. U.S. G.P.O., 1968.