Surangrat Khosittanasarn. 2005. The effectiveness of sex education program on prevention of undesirable sexual behaviors among grade 8 female students in Nakhonrachasima. Field of Study Health Education and Behavioral Sciences, Mahidol University;
Surangrat Khosittanasarn. (2005) The effectiveness of sex education program on prevention of undesirable sexual behaviors among grade 8 female students in Nakhonrachasima . Mahidol University/Bangkok.
Surangrat Khosittanasarn. The effectiveness of sex education program on prevention of undesirable sexual behaviors among grade 8 female students in Nakhonrachasima. . Bangkok:Mahidol University, 2005.
Surangrat Khosittanasarn. (2005) The effectiveness of sex education program on prevention of undesirable sexual behaviors among grade 8 female students in Nakhonrachasima . Mahidol University/Bangkok.