APA-referens (7:e uppl.)
American Water Works Association & ebrary, Inc. (2002). Safety practices for water utilities (6th ed.). American Water Works Association.
Chicago-referens (17:e uppl.)
American Water Works Association och Inc ebrary. Safety Practices for Water Utilities. 6th ed. Denver, CO: American Water Works Association, 2002.
MLA-referens (9:e uppl.)
American Water Works Association och Inc ebrary. Safety Practices for Water Utilities. 6th ed. American Water Works Association, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.