APA (7th ed.) Zitazioa

World Health Organization & ebrary, Inc. (2007). World health statistics 2007. World Health Organization.

Chicago Style (17th ed.) Zitazioa

World Health Organization eta Inc ebrary. World Health Statistics 2007. Geneva, Switzerland: World Health Organization, 2007.

MLA (9th ed.) Zitazioa

World Health Organization eta Inc ebrary. World Health Statistics 2007. World Health Organization, 2007.