Promvihan O. Development of the Apide Supervision Process for Internal Quality Assurance of Schools Under the Nakhon Si Thammarat Primary Educational Service Area Office 2: Development of the Apide Supervision Process for Internal Quality Assurance of Schools Under the Nakhon Si Thammarat Primary Educational Service Area Office 2. rtnb [internet]. 2026 Aug. 31 [cited 2026 Sep. 3];8(2):349-60. available from: https://so07.tci-thaijo.org/index.php/rtnb/article/view/11475