Meebunmak K, PhrakhruKemthammakosit, Weeraponkan B. 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. rtnb [internet]. 2026 Apr. 30 [cited 2026 Sep. 24];8(1):394-407. available from: https://so07.tci-thaijo.org/index.php/rtnb/article/view/10449