UNAIDS/WHO Working Group on Global HIV/AIDS and STI Surveillance. (2013). Guidelines for second generation HIV surveillance: An update - know your epidemic. World Health Organization.
Cita Chicago Style (17a ed.)UNAIDS/WHO Working Group on Global HIV/AIDS and STI Surveillance. Guidelines for Second Generation HIV Surveillance: An Update - Know Your Epidemic. Geneva: World Health Organization, 2013.
Cita MLA (9a ed.)UNAIDS/WHO Working Group on Global HIV/AIDS and STI Surveillance. Guidelines for Second Generation HIV Surveillance: An Update - Know Your Epidemic. World Health Organization, 2013.
Precaución: Estas citas no son 100% exactas.