American Water Works Association, ebrary, Inc, & Ingram, W. M. (2004). Problem organisms in water: Identification and treatment (3rd ed.). American Water Works Association.
Chicago-referens (17:e uppl.)American Water Works Association, Inc ebrary, och William Marcus Ingram. Problem Organisms in Water: Identification and Treatment. 3rd ed. Denver, Colo.: American Water Works Association, 2004.
MLA-referens (9:e uppl.)American Water Works Association, et al. Problem Organisms in Water: Identification and Treatment. 3rd ed. American Water Works Association, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.