Dyfyniad APA

(1999). WHO Monographs on Selected Medicinal Plants. World Health Organisation.

Dyfyniad Arddull Chicago

WHO Monographs on Selected Medicinal Plants. Geneva: World Health Organisation, 1999.

Dyfyniad MLA

WHO Monographs on Selected Medicinal Plants. World Health Organisation, 1999.

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