Wolrd Health Organization. (2002). WHO monographs on selected medicinal plants. World Health Organization.
Citazione stile Chigago Style (17a edizione)Wolrd Health Organization. WHO Monographs on Selected Medicinal Plants. Geneva: World Health Organization, 2002.
Citatione MLA (8a ed.)Wolrd Health Organization. WHO Monographs on Selected Medicinal Plants. World Health Organization, 2002.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.