Dyfyniad APA

Krishna Gopal. (2003). River pollution in India and its manangement. APH.

Dyfyniad Arddull Chicago

Krishna Gopal. River Pollution in India and Its Manangement. New Delhi: APH, 2003.

Dyfyniad MLA

Krishna Gopal. River Pollution in India and Its Manangement. APH, 2003.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.