Nguyen และผู้แต่งคนอื่นๆ. (2010) Risk behaviors and unprotected sex related to HIV/AIDS infection among men who have sex with men in Angiang provinces, Vietnam. Mahidol University:ม.ป.ท.Nguyen และผู้แต่งคนอื่นๆ. 2010. Risk behaviors and unprotected sex related to HIV/AIDS infection among men who have sex with men in Angiang provinces, Vietnam. ม.ป.ท.:Mahidol University;Nguyen และผู้แต่งคนอื่นๆ. Risk behaviors and unprotected sex related to HIV/AIDS infection among men who have sex with men in Angiang provinces, Vietnam. ม.ป.ท.:Mahidol University, 2010. Print.