Dokumentuaren aipamena
APA (7th ed.) Zitazioa
American Water Works Association & ebrary, Inc. (2003). Recommended practice for backflow prevention and cross-connection control (3rd ed.). American Water Works Association.
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Chicago Style (17th ed.) Zitazioa
American Water Works Association eta Inc ebrary. Recommended Practice for Backflow Prevention and Cross-connection Control. 3rd ed. Denver, Colo.: American Water Works Association, 2003.
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MLA (9th ed.) Zitazioa
American Water Works Association eta Inc ebrary. Recommended Practice for Backflow Prevention and Cross-connection Control. 3rd ed. American Water Works Association, 2003.
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