Federation, W. P. C. (1980). WPCF wastewater treatment skill training package: Activated sludge process equipment. Washington, D C : Water Pollution Control Federation.
Chicago Style (17th ed.) CitationFederation, Water Pollution Control. WPCF Wastewater Treatment Skill Training Package: Activated Sludge Process Equipment. Washington, D C : Water Pollution Control Federation, 1980.
MLA (9th ed.) CitationFederation, Water Pollution Control. WPCF Wastewater Treatment Skill Training Package: Activated Sludge Process Equipment. Washington, D C : Water Pollution Control Federation, 1980.
Warning: These citations may not always be 100% accurate.