American Water Works Association, ebrary, Inc, Stubbart, J. M., Lauer, B., & McCandless, T. J. (2004). AWWA water operator field guide. American Water Works Association.
Chicago Style (17th ed.) CitationAmerican Water Works Association, Inc ebrary, John M. Stubbart, Bill Lauer, and Timothy J. McCandless. AWWA Water Operator Field Guide. Denver, Colo.: American Water Works Association, 2004.
MLA citiranjeAmerican Water Works Association, et al. AWWA Water Operator Field Guide. American Water Works Association, 2004.
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