Sukhawatthanakun, Kanyarat, Tunyalak Muangkot, Kwanchanok Wongpangson, Worravit Kultangwattana, and Kriangkrai Promnanuritte. 2010. “Factors Influencing University Selection of Grade 12 Students in the Upper Northeastern Region of Thailand”. Kasetsart Journal of Social Sciences 31 (3):307-18. https://so04.tci-thaijo.org/index.php/kjss/article/view/246684.