Water Pollution Control Federation. Task Force on Natural Systems & Reed, S. C. (1990). Natural systems for wastewater treatment. Water Pollution Control Federation.
Chicago-Zitierstil (17. Ausg.)Water Pollution Control Federation. Task Force on Natural Systems und Sherwood C. Reed. Natural Systems for Wastewater Treatment. Alexandria, Va.: Water Pollution Control Federation, 1990.
MLA-Zitierstil (8. Ausg.)Water Pollution Control Federation. Task Force on Natural Systems und Sherwood C. Reed. Natural Systems for Wastewater Treatment. Water Pollution Control Federation, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.