UNAIDS. (1999). HIV/AIDS learning package for secondary school adolescents.
Citazione stile Chigago Style (17a edizione)UNAIDS. HIV/AIDS Learning Package for Secondary School Adolescents. 1999.
Citatione MLA (8a ed.)UNAIDS. HIV/AIDS Learning Package for Secondary School Adolescents. 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.