Satitpongsa S, Santawan T, Tawee S. The Factors Affecting an Implementation of Internal Quality Assurance in the Schools of Educational Opportunity Expansion School under the Nakhon Sawan Primary Educational Service Area Office 3. edunsruj [internet]. 2024 Dec. 27 [cited 2025 Apr. 3];7(3):29-43. available from: https://so02.tci-thaijo.org/index.php/edunsrujo/article/view/267485