APA (7th ed.) Citation

Warden, J. (1983). Sludge treatment plan for waterworks. Water Research Centre.

Chicago Style (17th ed.) Citation

Warden, J.H. Sludge Treatment Plan for Waterworks. Stevenage, Herts.: Water Research Centre, 1983.

MLA (9th ed.) Citation

Warden, J.H. Sludge Treatment Plan for Waterworks. Water Research Centre, 1983.