Dyfyniad APA

WRIGHLEY, G. Tropical agriculture#the development of production#Gordon Wrighley. Longman.

Dyfyniad Arddull Chicago

WRIGHLEY, Gordon. Tropical Agriculture#the Development of Production#Gordon Wrighley. Longman.

Dyfyniad MLA

WRIGHLEY, Gordon. Tropical Agriculture#the Development of Production#Gordon Wrighley. Longman.

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