Cita APA (7th ed.)
World Health Organization & ebrary, Inc. (2008). World health statistics 2008. World Health Organization.
Cita Chicago (17th ed.)
World Health Organization i Inc ebrary. World Health Statistics 2008. Geneva, Switzerland: World Health Organization, 2008.
Cita MLA (9th ed.)
World Health Organization i Inc ebrary. World Health Statistics 2008. World Health Organization, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.