World Health Organization & World Health Organization. (1998). Regulatory Situation of Herbal Medicines. World Health organization.
Citación estilo ChicagoWorld Health Organization and World Health Organization. Regulatory Situation of Herbal Medicines. Geneva: World Health organization, 1998.
Cita MLAWorld Health Organization and World Health Organization. Regulatory Situation of Herbal Medicines. World Health organization, 1998.
Warning: These citations may not always be 100% accurate.