WHO. (1998). QUALITY CONTROL METHODS FOR MEDICINAL PLANT MATERIAL.
Chicago Style aipamenaWHO. QUALITY CONTROL METHODS FOR MEDICINAL PLANT MATERIAL. GENEVA, 1998.
MLA aipamenaWHO. QUALITY CONTROL METHODS FOR MEDICINAL PLANT MATERIAL. 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.