Meebunmak , Kesinee, PhrakhruKemthammakosit, and Boonlert Weeraponkan. “Guidelines for Internal Supervision Enhancing Quality Classroom based on Sangkhavatthus 4 in Schools of Promkhiri Education Network under Nakhon Si Thammarat Primary Educational Service Area Office 4: Guidelines for Internal Supervision Enhancing Quality Classroom based on Sangkhavatthus 4 in Schools of Promkhiri Education Network under Nakhon Si Thammarat Primary Educational Service Area Office 4”. RATANABUTH JOURNAL 8, no. 1 (April 30, 2026): 394–407. accessed September 24, 2026. https://so07.tci-thaijo.org/index.php/rtnb/article/view/10449.