UNAIDS. (1999). HIV/AIDS learning package for secondary school adolescents.
芝加哥风格引文UNAIDS. HIV/AIDS Learning Package for Secondary School Adolescents. 1999.
MLA引文UNAIDS. HIV/AIDS Learning Package for Secondary School Adolescents. 1999.
警告：这些引文格式不一定是100％准确.