Dyfyniad APA

De Candolle, A. (1959). Origin of cultivated plants. Hafner Publishing Compnay.

Dyfyniad Arddull Chicago

De Candolle, Alphonse. Origin of Cultivated Plants. Newyork: Hafner Publishing Compnay, 1959.

Dyfyniad MLA

De Candolle, Alphonse. Origin of Cultivated Plants. Hafner Publishing Compnay, 1959.

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