Plaikaew, Chanita. “he dministrative kills of chool dministrators ffecting the tandard perating rocedures (SOPs) of nternal uality ssurance (IQA) of chools under the ffice of atchaburi rimary ducational ervice rea ”. Journal of Management Science Nakhon Pathom Rajabhat University 7, no. 1 (June 1, 2020): 1-15. ccessed December 4, 2021. https://so03.tci-thaijo.org/index.php/JMSNPRU/article/view/244016.