Dyfyniad APA

Singh, K., & Shishodia, A. (2016). Environmental economics. Sage Texts.

Dyfyniad Arddull Chicago

Singh, Katar, and Anil Shishodia. Environmental Economics. New Delhi: Sage Texts, 2016.

Dyfyniad MLA

Singh, Katar, and Anil Shishodia. Environmental Economics. Sage Texts, 2016.

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