Rukrung, N., and L. Petchroj. “General Administration under the New Normal of Private Schools under Jurisdiction of Suphanburi Provincial Education Office”. Journal of Humanities and Social Sciences, Rajapruk University, vol. 9, no. 2, Aug. 2023, pp. 346-61, https://so03.tci-thaijo.org/index.php/rpu/article/view/271211.