Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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