United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on National Parks. (2003). Competitive sourcing effort within the National Park Service: Hearing before the Subcommittee on National Parks of the Committee on Energy and Natural Resources, United States Senate, One Hundred Eighth Congress, first session, to conduct oversight of the competitive sourcing effort within the National Park Service, July 24, 2003. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on National Parks. Competitive Sourcing Effort Within the National Park Service: Hearing Before the Subcommittee on National Parks of the Committee on Energy and Natural Resources, United States Senate, One Hundred Eighth Congress, First Session, to Conduct Oversight of the Competitive Sourcing Effort Within the National Park Service, July 24, 2003. Washington: U.S. G.P.O., 2003.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on National Parks. Competitive Sourcing Effort Within the National Park Service: Hearing Before the Subcommittee on National Parks of the Committee on Energy and Natural Resources, United States Senate, One Hundred Eighth Congress, First Session, to Conduct Oversight of the Competitive Sourcing Effort Within the National Park Service, July 24, 2003. U.S. G.P.O., 2003.