APA-referens (7:e uppl.)

Sharma, k. (2009). Impact of global environment. Mahaveer Publ.

Chicago-referens (17:e uppl.)

Sharma, kapil. Impact of Global Environment. New delhi: Mahaveer Publ, 2009.

MLA-referens (9:e uppl.)

Sharma, kapil. Impact of Global Environment. Mahaveer Publ, 2009.