APA

United States, . (2003). National parks backlog: 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 maintenance backlog, land acquisition backlog, and deficit in personnel within the national park system, including the impact of new park unit designations on resolving each of these concerns, July 8, 2003. Washington: U.S. G.P.O.

Chicago

United States, . 2003. National parks backlog: 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 maintenance backlog, land acquisition backlog, and deficit in personnel within the national park system, including the impact of new park unit designations on resolving each of these concerns, July 8, 2003. Washington: U.S. G.P.O.

Harvard

United States, . (2003). National parks backlog: 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 maintenance backlog, land acquisition backlog, and deficit in personnel within the national park system, including the impact of new park unit designations on resolving each of these concerns, July 8, 2003. Washington: U.S. G.P.O.

MLA

United States, . National parks backlog: 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 maintenance backlog, land acquisition backlog, and deficit in personnel within the national park system, including the impact of new park unit designations on resolving each of these concerns, July 8, 2003. Washington: U.S. G.P.O. 2003.