Nirunrat Singtana, & Ngamlamai Piolueang. (2021). Locus of Control, Social Support, Self - Determination, and Self - Directed Learning of Students at Kasetsart University, Bangkhen Campus. KKU Research Journal (Graduate Studies) Humanities and Social Sciences, 9(1), 35–46. Retrieved from https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/225890