APA

United States, . (1972). Reports to Congress, by Comptroller General of United States: need to improve administration of water pollution research, development, and demonstration program, Environmental Protection Agency. [Washington, D.C: .

Chicago

United States, . 1972. Reports to Congress, by Comptroller General of United States: need to improve administration of water pollution research, development, and demonstration program, Environmental Protection Agency. [Washington, D.C: .

Harvard

United States, . (1972). Reports to Congress, by Comptroller General of United States: need to improve administration of water pollution research, development, and demonstration program, Environmental Protection Agency. [Washington, D.C: .

MLA

United States, . Reports to Congress, by Comptroller General of United States: need to improve administration of water pollution research, development, and demonstration program, Environmental Protection Agency. [Washington, D.C: . 1972.