World Health Organization. (2008). World health statistics 2008. World Health Organization.
Cita Chicago Style (17a ed.)World Health Organization. World Health Statistics 2008. Geneva, Switzerland: World Health Organization, 2008.
Cita MLA (8a ed.)World Health Organization. World Health Statistics 2008. World Health Organization, 2008.
Precaución: Estas citas no son 100% exactas.