United States. Environmental Protection Agency. Office of Water Program Operations. Municipal Operations Branch. (1977). Process control manual for aerobic biological wastewater treatment facilities: Air, solids, clean water. Environmental Protection Agency, Office of Water Program Operations, Municipal Operations Branch.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. Office of Water Program Operations. Municipal Operations Branch. Process Control Manual for Aerobic Biological Wastewater Treatment Facilities: Air, Solids, Clean Water. Washington: Environmental Protection Agency, Office of Water Program Operations, Municipal Operations Branch, 1977.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. Office of Water Program Operations. Municipal Operations Branch. Process Control Manual for Aerobic Biological Wastewater Treatment Facilities: Air, Solids, Clean Water. Environmental Protection Agency, Office of Water Program Operations, Municipal Operations Branch, 1977.