APA

United States, . (1973). Reports to Congress, by Comptroller General of United States: need to control discharges from sewers carrying both sewage and storm runoff, Environmental Protection Agency. [Washington, D.C: .

Chicago

United States, . 1973. Reports to Congress, by Comptroller General of United States: need to control discharges from sewers carrying both sewage and storm runoff, Environmental Protection Agency. [Washington, D.C: .

Harvard

United States, . (1973). Reports to Congress, by Comptroller General of United States: need to control discharges from sewers carrying both sewage and storm runoff, Environmental Protection Agency. [Washington, D.C: .

MLA

United States, . Reports to Congress, by Comptroller General of United States: need to control discharges from sewers carrying both sewage and storm runoff, Environmental Protection Agency. [Washington, D.C: . 1973.