APA (7th ed.) Citation

Hanel, K. (1988). Biological treatment of sewage by the activated sludge process. Horwood.

Chicago Style (17th ed.) Citation

Hanel, Klaus. Biological Treatment of Sewage by the Activated Sludge Process. Chichester: Horwood, 1988.

MLA (9th ed.) Citation

Hanel, Klaus. Biological Treatment of Sewage by the Activated Sludge Process. Horwood, 1988.

Warning: These citations may not always be 100% accurate.