APA (7th ed.) Citation
Alexander, W. V., & Marais, G. v. R. (2015). The contact stabilization activated sludge process. Department of Civil Engineering.
Chicago Style (17th ed.) Citation
Alexander, William Versfeld, and Gerrit van Rooyen Marais. The Contact Stabilization Activated Sludge Process. Department of Civil Engineering, 2015.
MLA (9th ed.) Citation
Alexander, William Versfeld, and Gerrit van Rooyen Marais. The Contact Stabilization Activated Sludge Process. Department of Civil Engineering, 2015.
Warning: These citations may not always be 100% accurate.