(2001). Emergency planning for water utilities (4th ed.). American Water Works Association.
Chicago-Zitierstil (17. Ausg.)Emergency Planning for Water Utilities. 4th ed. Denver, Colo: American Water Works Association, 2001.
MLA-Zitierstil (9. Ausg.)Emergency Planning for Water Utilities. 4th ed. American Water Works Association, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.