APA
Sharma, . (2013). Enviornmental Studies. New Delhi: Uni Sci Press.
Chicago
Sharma, . 2013. Enviornmental Studies. New Delhi: Uni Sci Press.
Harvard
Sharma, . (2013). Enviornmental Studies. New Delhi: Uni Sci Press.
MLA
Sharma, . Enviornmental Studies. New Delhi: Uni Sci Press. 2013.