APA-referens (7:e uppl.)

Kaushik, A. (2012). Perspective in Environmental Studies (3rd.). New Age.

Chicago-referens (17:e uppl.)

Kaushik, A. Perspective in Environmental Studies. 3rd. New Delhi: New Age, 2012.

MLA-referens (9:e uppl.)

Kaushik, A. Perspective in Environmental Studies. 3rd. New Age, 2012.