Mongkolkul, Supaporn. “Internal Supervision in the Mueang District 4 School Cluster, under the Prachuap Khiri Khan Primary Educational Service Area Office 1: Internal Supervision in the Mueang District 4 School Cluster, under the Prachuap Khiri Khan Primary Educational Service Area Office 1”. Journal of Liberal Arts and Education (Online) 2, no. 2 (August 31, 2026): 28–44. accessed September 25, 2026. https://so11.tci-thaijo.org/index.php/LAE/article/view/4204.