American Water Works Association, ebrary, Inc, Stubbart, J. M., Lauer, B., & McCandless, T. J. (2004). AWWA water operator field guide. American Water Works Association.
Citace podle Chicago (17th ed.)American Water Works Association, Inc ebrary, John M. Stubbart, Bill Lauer, a Timothy J. McCandless. AWWA Water Operator Field Guide. Denver, Colo.: American Water Works Association, 2004.
Citace podle MLA (9th ed.)American Water Works Association, et al. AWWA Water Operator Field Guide. American Water Works Association, 2004.
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