Lertsiri, W., and C. Sorapan. “Time Management of School Administrators Working in Schools Under the Pathum Thani Primary Educational Service Area Office 2”. Integrated Social Science Journal, Mahidol University, vol. 9, no. 1, Aug. 2022, pp. 32-55, https://so02.tci-thaijo.org/index.php/isshmu/article/view/256600.