World Health Organization. (1998). Guidelines for the appropriate use of herbal medicines. World Health organization.
Chicago-referens (17:e uppl.)World Health Organization. Guidelines for the Appropriate Use of Herbal Medicines. Manila: World Health organization, 1998.
MLA-referens (8:e uppl.)World Health Organization. Guidelines for the Appropriate Use of Herbal Medicines. World Health organization, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.