Wolrd Health Organization. (2002). WHO monographs on selected medicinal plants. World Health Organization.
Chicago Style aipamenaWolrd Health Organization. WHO Monographs on Selected Medicinal Plants. Geneva: World Health Organization, 2002.
MLA aipamenaWolrd Health Organization. WHO Monographs on Selected Medicinal Plants. World Health Organization, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.