APA استشهاد

Gopal Iyer K. & Roy, U. N. (2005). Watershed management and sustainable development. Kanishka Publishers.

استشهاد بنمط شيكاغو

Gopal Iyer K. و Upendra Nath Roy. Watershed Management and Sustainable Development. New Delhi: Kanishka Publishers, 2005.

MLA استشهاد

Gopal Iyer K. و Upendra Nath Roy. Watershed Management and Sustainable Development. Kanishka Publishers, 2005.