APA
World Health Organization, WHO Consultation on Selected Medicinal Plants, . (1999). WHO monographs on selected medicinal plants: vol, 1. Geneva: WHO.
Chicago
World Health Organization, WHO Consultation on Selected Medicinal Plants, . 1999. WHO monographs on selected medicinal plants: vol, 1. Geneva: WHO.
Harvard
World Health Organization, WHO Consultation on Selected Medicinal Plants, . (1999). WHO monographs on selected medicinal plants: vol, 1. Geneva: WHO.
MLA
World Health Organization, WHO Consultation on Selected Medicinal Plants, . WHO monographs on selected medicinal plants: vol, 1. Geneva: WHO. 1999.