Cita APA (7th ed.)
American Water Works Association & ebrary, Inc. (2003). Recommended practice for backflow prevention and cross-connection control (3rd ed.). American Water Works Association.
Cita Chicago (17th ed.)
American Water Works Association i Inc ebrary. Recommended Practice for Backflow Prevention and Cross-connection Control. 3rd ed. Denver, Colo.: American Water Works Association, 2003.
Cita MLA (9th ed.)
American Water Works Association i Inc ebrary. Recommended Practice for Backflow Prevention and Cross-connection Control. 3rd ed. American Water Works Association, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.