Dyfyniad APA

Wolrd Health Organization. (2002). WHO monographs on selected medicinal plants. World Health Organization.

Dyfyniad Arddull Chicago

Wolrd Health Organization. WHO Monographs on Selected Medicinal Plants. Geneva: World Health Organization, 2002.

Dyfyniad MLA

Wolrd Health Organization. WHO Monographs on Selected Medicinal Plants. World Health Organization, 2002.

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