APA
World Health Organization, WHO Consultation on Selected Medicinal Plants, . (2009). WHO monographs on selected medicinal plants: volume 4. Geneva: WHO.
Chicago
World Health Organization, WHO Consultation on Selected Medicinal Plants, . 2009. WHO monographs on selected medicinal plants: volume 4. Geneva: WHO.
Harvard
World Health Organization, WHO Consultation on Selected Medicinal Plants, . (2009). WHO monographs on selected medicinal plants: volume 4. Geneva: WHO.
MLA
World Health Organization, WHO Consultation on Selected Medicinal Plants, . WHO monographs on selected medicinal plants: volume 4. Geneva: WHO. 2009.