APA

United States, . (1972). Development of hard mineral resources of deep seabed: hearing before Subcommittee on Minerals, Materials, and Fuels, 92d Congress, 2d session, on S. 2801 : June 2, 1972. [Washington, D.C.]: .

Chicago

United States, . 1972. Development of hard mineral resources of deep seabed: hearing before Subcommittee on Minerals, Materials, and Fuels, 92d Congress, 2d session, on S. 2801 : June 2, 1972. [Washington, D.C.]: .

Harvard

United States, . (1972). Development of hard mineral resources of deep seabed: hearing before Subcommittee on Minerals, Materials, and Fuels, 92d Congress, 2d session, on S. 2801 : June 2, 1972. [Washington, D.C.]: .

MLA

United States, . Development of hard mineral resources of deep seabed: hearing before Subcommittee on Minerals, Materials, and Fuels, 92d Congress, 2d session, on S. 2801 : June 2, 1972. [Washington, D.C.]: . 1972.