Dyfyniad APA

Earl, D. (1975). Forest energy and economic development. Clarendon Press.

Dyfyniad Arddull Chicago

Earl, D.E. Forest Energy and Economic Development. Oxford: Clarendon Press, 1975.

Dyfyniad MLA

Earl, D.E. Forest Energy and Economic Development. Clarendon Press, 1975.

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