Sawangwong, S., and P. Poophayang. “The Relationship Between the Servant Leadership of School Administrators and the Student Support System in School Under the Chaiyaphum Primary Educational Service Area Office 3”. Journal of Graduate MCU KhonKaen Campus, vol. 9, no. 3, Sept. 2022, pp. 123-35, https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/255583.