APA (7th ed.) Citation

Knovel (Firm), American Water Works Association, & Stubbart, J. M. (2006). AWWA wastewater operator field guide. American Water Works Association.

Chicago Style (17th ed.) Citation

Knovel (Firm), American Water Works Association, and John M. Stubbart. AWWA Wastewater Operator Field Guide. Denver, CO: American Water Works Association, 2006.

MLA (9th ed.) Citation

Knovel (Firm), et al. AWWA Wastewater Operator Field Guide. American Water Works Association, 2006.