APA
Tripathi A., . (19931995). Water pollution. New Delhi: Ashish Publishing House.
Chicago
Tripathi A.K, . 19931995. Water pollution. New Delhi: Ashish Publishing House.
Harvard
Tripathi A., . (19931995). Water pollution. New Delhi: Ashish Publishing House.
MLA
Tripathi A.K, . Water pollution. New Delhi: Ashish Publishing House. 19931995.