สระสิงห์ นายจิรศักดิ์. “The Purposes of a Studied Motivated Enrollment of Secondary School Student in Sisaket Province”. SSKRU Research and Development Journal 8, no. 2 (December 23, 2021): 18–26. Accessed February 25, 2024. https://so01.tci-thaijo.org/index.php/sskru-resarch/article/view/253517.