Bloetscher, F. (2011). Utility management for water and wastewater operators. American Water Works Association.
Chicago-Zitierstil (17. Ausg.)Bloetscher, Frederick. Utility Management for Water and Wastewater Operators. Denver, Colo: American Water Works Association, 2011.
MLA-Zitierstil (9. Ausg.)Bloetscher, Frederick. Utility Management for Water and Wastewater Operators. American Water Works Association, 2011.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.