Pham และ Hung Luc. (1995) Knowledge, attitudes and sexual behavior of Mahidol University students on AIDS. Mahidol University,:ม.ป.ท.Pham และ Hung Luc. 1995. Knowledge, attitudes and sexual behavior of Mahidol University students on AIDS. ม.ป.ท.:Mahidol University,;Pham และ Hung Luc. Knowledge, attitudes and sexual behavior of Mahidol University students on AIDS. ม.ป.ท.:Mahidol University, 1995. Print.