APA

United States, . (1975). Proposed wilderness areas: hearing before Subcommittee on Environment and Land Resources, 94th Congress, 1st session, on S. 74, S. 226, S. 392, [and] S. 1391, May 20, 1975. [Washington, D.C.]: .

Chicago

United States, . 1975. Proposed wilderness areas: hearing before Subcommittee on Environment and Land Resources, 94th Congress, 1st session, on S. 74, S. 226, S. 392, [and] S. 1391, May 20, 1975. [Washington, D.C.]: .

Harvard

United States, . (1975). Proposed wilderness areas: hearing before Subcommittee on Environment and Land Resources, 94th Congress, 1st session, on S. 74, S. 226, S. 392, [and] S. 1391, May 20, 1975. [Washington, D.C.]: .

MLA

United States, . Proposed wilderness areas: hearing before Subcommittee on Environment and Land Resources, 94th Congress, 1st session, on S. 74, S. 226, S. 392, [and] S. 1391, May 20, 1975. [Washington, D.C.]: . 1975.