APA
Kumar A., . (2003). Dimensions environmental threats. Delhi: Daya publishing house.
Chicago
Kumar Arvind, . 2003. Dimensions environmental threats. Delhi: Daya publishing house.
Harvard
Kumar A., . (2003). Dimensions environmental threats. Delhi: Daya publishing house.
MLA
Kumar Arvind, . Dimensions environmental threats. Delhi: Daya publishing house. 2003.