APA

United States, . (1967). Progress in weather modification: hearing before Subcommittee on Water and Power Resources, 90th Congress, 1st session, Apr. 4, 1967. [Washington, D.C.]: .

Chicago

United States, . 1967. Progress in weather modification: hearing before Subcommittee on Water and Power Resources, 90th Congress, 1st session, Apr. 4, 1967. [Washington, D.C.]: .

Harvard

United States, . (1967). Progress in weather modification: hearing before Subcommittee on Water and Power Resources, 90th Congress, 1st session, Apr. 4, 1967. [Washington, D.C.]: .

MLA

United States, . Progress in weather modification: hearing before Subcommittee on Water and Power Resources, 90th Congress, 1st session, Apr. 4, 1967. [Washington, D.C.]: . 1967.