Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.