Iamrahong P, Yafu S, Potipitak P. Factors Affecting Internal Quality Assurance Performance of School Under Nakhonsawan Primary Educational Service Area Office 1. edunsruj [internet]. 2024 Aug. 31 [cited 2026 Sep. 11];7(2):293-306. available from: https://so02.tci-thaijo.org/index.php/edunsrujo/article/view/267264