United States. Environmental Protection Agency. Office of Water and Hazardous Materials. (1974). Federal guidelines: Operation and maintenance of wastewater treatment facilities. Environmental Protection Agency, Office of Water and Hazardous Materials.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. Office of Water and Hazardous Materials. Federal Guidelines: Operation and Maintenance of Wastewater Treatment Facilities. Washington: Environmental Protection Agency, Office of Water and Hazardous Materials, 1974.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. Office of Water and Hazardous Materials. Federal Guidelines: Operation and Maintenance of Wastewater Treatment Facilities. Environmental Protection Agency, Office of Water and Hazardous Materials, 1974.