APA

United States, . (1972). Preservation of wilderness areas: hearing before Subcommittee on Public Lands, 92d Congress, 2d session on S. 2453 and related wilderness bills, May 5, 1972. [Washington, D.C.]: .

Chicago

United States, . 1972. Preservation of wilderness areas: hearing before Subcommittee on Public Lands, 92d Congress, 2d session on S. 2453 and related wilderness bills, May 5, 1972. [Washington, D.C.]: .

Harvard

United States, . (1972). Preservation of wilderness areas: hearing before Subcommittee on Public Lands, 92d Congress, 2d session on S. 2453 and related wilderness bills, May 5, 1972. [Washington, D.C.]: .

MLA

United States, . Preservation of wilderness areas: hearing before Subcommittee on Public Lands, 92d Congress, 2d session on S. 2453 and related wilderness bills, May 5, 1972. [Washington, D.C.]: . 1972.