APA (7th ed.) Zitazioa
American Water Works Association & ebrary, Inc. (2003). Groundwater (3rd ed.). American Water Works Association.
Chicago Style (17th ed.) Zitazioa
American Water Works Association eta Inc ebrary. Groundwater. 3rd ed. Denver, Colo.: American Water Works Association, 2003.
MLA (9th ed.) Zitazioa
American Water Works Association eta Inc ebrary. Groundwater. 3rd ed. American Water Works Association, 2003.
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