APA (7th ed.) Citation

Water Pollution Control Federation. Task Force on Activated Sludge & Water Pollution Control Federation. O & M Subcommittee. (1987). Activated sludge. Water Pollution Control Federation.

Chicago Style (17th ed.) Citation

Water Pollution Control Federation. Task Force on Activated Sludge and Water Pollution Control Federation. O & M Subcommittee. Activated Sludge. Alexandria, VA: Water Pollution Control Federation, 1987.

MLA (9th ed.) Citation

Water Pollution Control Federation. Task Force on Activated Sludge and Water Pollution Control Federation. O & M Subcommittee. Activated Sludge. Water Pollution Control Federation, 1987.