APA (7th ed.) Citation

Stephenson, T., & Stuetz, R. (2009). Principles of water and wastewater treatment processes. IWA.

Chicago Style (17th ed.) Citation

Stephenson, Tom, and Richard Stuetz. Principles of Water and Wastewater Treatment Processes. London: IWA, 2009.

MLA (9th ed.) Citation

Stephenson, Tom, and Richard Stuetz. Principles of Water and Wastewater Treatment Processes. IWA, 2009.