APA (7th ed.) Zitazioa
World Health Organization & ebrary, Inc. (2010). World health statistics. World Health Organization.
Chicago Style (17th ed.) Zitazioa
World Health Organization eta Inc ebrary. World Health Statistics. Geneva: World Health Organization, 2010.
MLA (9th ed.) Zitazioa
World Health Organization eta Inc ebrary. World Health Statistics. World Health Organization, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.