Dyfyniad APA

Tripathi, A., & Pandey, S. (1990). Water Pollution. Ashish Pub. House.

Dyfyniad Arddull Chicago

Tripathi, A.K, and S.N Pandey. Water Pollution. New Delhi: Ashish Pub. House, 1990.

Dyfyniad MLA

Tripathi, A.K, and S.N Pandey. Water Pollution. Ashish Pub. House, 1990.

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