Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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