United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on National Parks. (2019). Encouraging the next generation to visit national parks: Hearing before the Subcommittee on National Parks of the Committee on Energy and Natural Resources, United States Senate, One Hundred Fifteenth Congress, first session, September 27, 2017. U.S. Government Publishing Office.
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on National Parks. Encouraging the Next Generation to Visit National Parks: Hearing Before the Subcommittee on National Parks of the Committee on Energy and Natural Resources, United States Senate, One Hundred Fifteenth Congress, First Session, September 27, 2017. Washington: U.S. Government Publishing Office, 2019.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on National Parks. Encouraging the Next Generation to Visit National Parks: Hearing Before the Subcommittee on National Parks of the Committee on Energy and Natural Resources, United States Senate, One Hundred Fifteenth Congress, First Session, September 27, 2017. U.S. Government Publishing Office, 2019.