เตชะพันธ์รัตนกุล นพรัตน์. 2019. “Motivation in Selected Study in Bachelor Degree of Students at Rajamangala University of Technology Lanna, Chiangmai”. RMUTL Journal of Business Administration and Liberal Arts 7 (2):59-71. https://so05.tci-thaijo.org/index.php/balajhss/article/view/187667.