Dyfyniad APA

Kolstand, C. D. (2010). Intermediate Environmental Economics. Oxford University Press.

Dyfyniad Arddull Chicago

Kolstand, Charles D. Intermediate Environmental Economics. New Delhi: Oxford University Press, 2010.

Dyfyniad MLA

Kolstand, Charles D. Intermediate Environmental Economics. Oxford University Press, 2010.

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