(2000). WHO drug information Vol.14.No.4,2000. World Health Organisation.
Chicago Style aipamenaWHO Drug Information Vol.14.No.4,2000. Geneva: World Health Organisation, 2000.
MLA aipamenaWHO Drug Information Vol.14.No.4,2000. World Health Organisation, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.