Dyfyniad APA

Thomas, J. M. (2007). Environmental economics: Applications, policy, and theory. Mason, OH: Thomson/South-Western.

Dyfyniad Arddull Chicago

Thomas, Janet M. Environmental Economics: Applications, Policy, and Theory. Mason, OH: Thomson/South-Western, 2007.

Dyfyniad MLA

Thomas, Janet M. Environmental Economics: Applications, Policy, and Theory. Mason, OH: Thomson/South-Western, 2007.

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