Khongnawung, S., and M. Chaiyaphan. “The Promoting on Personnel Development of School under the Jurisdiction of Chaiyaphum Primary Educational Service Area Office 2”. Journal of Graduate Saket Review, vol. 9, no. 2, Aug. 2024, pp. 214-25, https://so03.tci-thaijo.org/index.php/saketreview/article/view/279540.