APA
Rav M. N. &. D. A. K., . (1987). Waste water treatment. New Delhi: Oxford + IBH.
Chicago
Rav M Narayana & Datta Amal K, . 1987. Waste water treatment. New Delhi: Oxford + IBH.
Harvard
Rav M. N. &. D. A. K., . (1987). Waste water treatment. New Delhi: Oxford + IBH.
MLA
Rav M Narayana & Datta Amal K, . Waste water treatment. New Delhi: Oxford + IBH. 1987.