Sarnkham, Suwanan, Prasong Hassarin, and PhrakhruPariyattikhunrangsi -. 2023. “The academic administration by the principle of four sangahavathu for the administrators under the office of loei primary educational service area 2”. Journal of Graduate Saket Review 8 (2):24-35. https://so03.tci-thaijo.org/index.php/saketreview/article/view/261721.