APA (7th ed.) Citation

Water Pollution Control Federation. (1989). Operating activated sludge using oxygen uptake. Water Pollution Control Federation.

Chicago Style (17th ed.) Citation

Water Pollution Control Federation. Operating Activated Sludge Using Oxygen Uptake. u.s.a.: Water Pollution Control Federation, 1989.

MLA (9th ed.) Citation

Water Pollution Control Federation. Operating Activated Sludge Using Oxygen Uptake. Water Pollution Control Federation, 1989.