APA (7th ed.) Citation

Gray, N. F. (2004). Biology of wastewater treatment (Second edition.). Imperial College Press.

Chicago Style (17th ed.) Citation

Gray, N. F. Biology of Wastewater Treatment. Second edition. London: Imperial College Press, 2004.

MLA (8th ed.) Citation

Gray, N. F. Biology of Wastewater Treatment. Second edition. Imperial College Press, 2004.

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