APA

United States, . (1972). Snow Mountain, Lopez Canyon, and Aldo Leopold Wilderness areas: hearing before Subcommittee on Public Lands, 92d Congress, 2d session on S. 2680, S. 3027, S. 3256 : May 18, 1972. [Washington, D.C.]: .

Chicago

United States, . 1972. Snow Mountain, Lopez Canyon, and Aldo Leopold Wilderness areas: hearing before Subcommittee on Public Lands, 92d Congress, 2d session on S. 2680, S. 3027, S. 3256 : May 18, 1972. [Washington, D.C.]: .

Harvard

United States, . (1972). Snow Mountain, Lopez Canyon, and Aldo Leopold Wilderness areas: hearing before Subcommittee on Public Lands, 92d Congress, 2d session on S. 2680, S. 3027, S. 3256 : May 18, 1972. [Washington, D.C.]: .

MLA

United States, . Snow Mountain, Lopez Canyon, and Aldo Leopold Wilderness areas: hearing before Subcommittee on Public Lands, 92d Congress, 2d session on S. 2680, S. 3027, S. 3256 : May 18, 1972. [Washington, D.C.]: . 1972.