Plaikaew C. The administrative skills of school administrators affecting the Standard Operating Procedures (SOPs) of Internal Quality Assurance (IQA) of schools under the office of Ratchaburi Primary Educational Service Area 2. JMSNPRU [Internet]. 2020 Jun. 1 [cited 2024 Apr. 26];7(1):1-15. Available from: https://so03.tci-thaijo.org/index.php/JMSNPRU/article/view/244016