OMS. Bulletin of WHO: Vol.67(5)/1989. Geneva: OMS.
Chicago Style aipamenaOMS. Bulletin of WHO: Vol.67(5)/1989. Geneva: OMS.
MLA aipamenaOMS. Bulletin of WHO: Vol.67(5)/1989. Geneva: OMS.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena