APA (7 वां संस्करण) प्रशस्ति पत्र
American Water Works Association & ebrary, Inc. (2013). Nitrification prevention and control in drinking water (2nd ed.). American Water Works Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
American Water Works Association और Inc ebrary. Nitrification Prevention and Control in Drinking Water. 2nd ed. Denver, Colo.: American Water Works Association, 2013.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
American Water Works Association और Inc ebrary. Nitrification Prevention and Control in Drinking Water. 2nd ed. American Water Works Association, 2013.
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