Dyfyniad APA

Hanley, N., Shogren, J. F., & White, B. (2001). Introduction to environmental economics. Oxford University Press.

Dyfyniad Arddull Chicago

Hanley, Nick, Jason F. Shogren, and Ben White. Introduction to Environmental Economics. Oxford: Oxford University Press, 2001.

Dyfyniad MLA

Hanley, Nick, et al. Introduction to Environmental Economics. Oxford University Press, 2001.

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