Pinthong P, Narkpoy L, Onkasem P. ADMINISTRATIVE FACTORS AFFECTING THE IMPLEMENTATION OF INTERNAL QUALITY ASSURANCE IN SCHOOLS UNDER THE PROVINCIAL OFFICE OF LEARNING ENCOURAGEMENT IN THE EASTERN REGION. SN Grad J. [internet]. 2025 Dec. 28 [cited 2026 Sep. 3];22(99):หน้า 121-136. available from: https://so02.tci-thaijo.org/index.php/SNGSJ/article/view/275779