Cita APA (7th ed.)
American Water Works Association, ebrary, Inc, & Stubbart, J. M. (2006). AWWA wastewater operator field guide. American Water Works Association.
Cita Chicago (17th ed.)
American Water Works Association, Inc ebrary, i John M. Stubbart. AWWA Wastewater Operator Field Guide. Denver, Colo.: American Water Works Association, 2006.
Cita MLA (9th ed.)
American Water Works Association, et al. AWWA Wastewater Operator Field Guide. American Water Works Association, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.