Dyfyniad APA

Wolrd Health Organization & World Health Organization. (2007). WHO monographs on selected medicinal plants. World Health Organization.

Dyfyniad Arddull Chicago

Wolrd Health Organization and World Health Organization. WHO Monographs on Selected Medicinal Plants. Geneva: World Health Organization, 2007.

Dyfyniad MLA

Wolrd Health Organization and World Health Organization. WHO Monographs on Selected Medicinal Plants. World Health Organization, 2007.

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