APA (7th ed.) Zitazioa
Ritter, J. A. (2010). Water quality (4th ed.). American Water Works Association.
Chicago Style (17th ed.) Zitazioa
Ritter, Joseph A. Water Quality. 4th ed. Denver, Colo.: American Water Works Association, 2010.
MLA (9th ed.) Zitazioa
Ritter, Joseph A. Water Quality. 4th ed. American Water Works Association, 2010.
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