एपीए उद्धरण

Khanna, D. R. (1993). Ecology and pollution of Ganga River: A Limnological study at Hardwar.

शिकागो स्टाइल उद्धरण

Khanna, Dev Raj. Ecology and Pollution of Ganga River: A Limnological Study at Hardwar. Ashish Publishing House, New Delhi, 1993.

एमएलए उद्धरण

Khanna, Dev Raj. Ecology and Pollution of Ganga River: A Limnological Study at Hardwar. 1993.