APA (7 वां संस्करण) प्रशस्ति पत्र
American Water Works Association, ebrary, Inc, & Stubbart, J. M. (2006). AWWA wastewater operator field guide. American Water Works Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
American Water Works Association, Inc ebrary, और John M. Stubbart. AWWA Wastewater Operator Field Guide. Denver, Colo.: American Water Works Association, 2006.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
American Water Works Association, et al. AWWA Wastewater Operator Field Guide. American Water Works Association, 2006.
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