APA استشهاد

Goel, P. K. (1997). Water pollution: : causes, effects and control. New age international publishers.

استشهاد بنمط شيكاغو

Goel, P. K. Water Pollution: : Causes, Effects and Control. New Delhi: New age international publishers, 1997.

MLA استشهاد

Goel, P. K. Water Pollution: : Causes, Effects and Control. New age international publishers, 1997.