Pankasem, Pakitta, Chatphum Sichomphoo, and Chaowarit Chancheen. 2021. “Administration of Stand Alone Schools Under Sukhothai Primary Education Area Office 2”. Journal of Graduate Research 12 (2):145-58. https://so02.tci-thaijo.org/index.php/banditvijai/article/view/249194.