World Health Organization. (2006). Preventing HIV/AIDS in Young people. World health Organization.
Cita Chicago (17th ed.)World Health Organization. Preventing HIV/AIDS in Young People. Ginebra: World health Organization, 2006.
Cita MLA (9th ed.)World Health Organization. Preventing HIV/AIDS in Young People. World health Organization, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.