APA

United States, . (1973). Federal areas for outdoor recreation: hearing before Subcommittee on Parks and Recreation, 93d Congress, 1st session on S. 1381, Apr. 12, 1973. [Washington, D.C.]: .

Chicago

United States, . 1973. Federal areas for outdoor recreation: hearing before Subcommittee on Parks and Recreation, 93d Congress, 1st session on S. 1381, Apr. 12, 1973. [Washington, D.C.]: .

Harvard

United States, . (1973). Federal areas for outdoor recreation: hearing before Subcommittee on Parks and Recreation, 93d Congress, 1st session on S. 1381, Apr. 12, 1973. [Washington, D.C.]: .

MLA

United States, . Federal areas for outdoor recreation: hearing before Subcommittee on Parks and Recreation, 93d Congress, 1st session on S. 1381, Apr. 12, 1973. [Washington, D.C.]: . 1973.