APA (7th ed.) Zitazioa

(2014). Safety management for utilities (Seventh edition.). American Water Works Association.

Chicago Style (17th ed.) Zitazioa

Safety Management for Utilities. Seventh edition. Denver, Colorado: American Water Works Association, 2014.

MLA (9th ed.) Zitazioa

Safety Management for Utilities. Seventh edition. American Water Works Association, 2014.