APA استشهاد

P.R.Srivastava & S.K.Shukla. (1997). Global environment series vol. 2 (1st.). Common Wealth.

استشهاد بنمط شيكاغو

P.R.Srivastava و S.K.Shukla. Global Environment Series Vol. 2. 1st. New Delhi: Common Wealth, 1997.

MLA استشهاد

P.R.Srivastava و S.K.Shukla. Global Environment Series Vol. 2. 1st. Common Wealth, 1997.