Dyfyniad APA

Barbier, E. B. (2005). Natural resources and economic development. Cambridge University Press.

Dyfyniad Arddull Chicago

Barbier, Edward B. Natural Resources and Economic Development. Cambridge University Press, 2005.

Dyfyniad MLA

Barbier, Edward B. Natural Resources and Economic Development. Cambridge University Press, 2005.

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