UNAIDS. (1999). HIV/AIDS learning package for secondary school adolescents.
Chicago Style (17th ed.) CitationUNAIDS. HIV/AIDS Learning Package for Secondary School Adolescents. 1999.
MLA引文UNAIDS. HIV/AIDS Learning Package for Secondary School Adolescents. 1999.
警告:這些引文格式不一定是100%准確.