Παραπομπή APA

Shukla, S., & Srivastava, P. (1992). Human environment: An analysis. Common Wealth.

Παραπομπή Chicago Style

Shukla, S.K, και P.R Srivastava. Human Environment: An Analysis. New Delhi: Common Wealth, 1992.

Παραπομπή MLA

Shukla, S.K, και P.R Srivastava. Human Environment: An Analysis. Common Wealth, 1992.