Cita APA (7th ed.)
American Water Works Association & ebrary, Inc. (2001). Emergency planning for water utilities (4th ed.). American Water Works Association.
Cita Chicago (17th ed.)
American Water Works Association i Inc ebrary. Emergency Planning for Water Utilities. 4th ed. Denver, Colo.: American Water Works Association, 2001.
Cita MLA (9th ed.)
American Water Works Association i Inc ebrary. Emergency Planning for Water Utilities. 4th ed. American Water Works Association, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.