United States. Congress. House. Committee on Education and Labor. Select Subcommittee on Labor & ProQuest (Firm). (1968). Occupational Safety and Health: Hearings before the United States House Committee on Education and Labor, Select Subcommittee on Labor, Ninetieth Congress, second session, on Feb. 1, 20, 28, 29, Mar. 5-8, 11, 12, 14, 1968. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. House. Committee on Education and Labor. Select Subcommittee on Labor and ProQuest (Firm). Occupational Safety and Health: Hearings Before the United States House Committee on Education and Labor, Select Subcommittee on Labor, Ninetieth Congress, Second Session, on Feb. 1, 20, 28, 29, Mar. 5-8, 11, 12, 14, 1968. Washington: U.S. G.P.O., 1968.
MLA (9th ed.) CitationUnited States. Congress. House. Committee on Education and Labor. Select Subcommittee on Labor and ProQuest (Firm). Occupational Safety and Health: Hearings Before the United States House Committee on Education and Labor, Select Subcommittee on Labor, Ninetieth Congress, Second Session, on Feb. 1, 20, 28, 29, Mar. 5-8, 11, 12, 14, 1968. U.S. G.P.O., 1968.