Phomkhot, C., and L. Petchroj. “The Relationship Between School Administration and Effectiveness of The Schools in Nonthaburi Province under The Secondary”. Journal of Humanities and Social Sciences, Rajapruk University, vol. 8, no. 2, Aug. 2022, pp. 175-91, https://so03.tci-thaijo.org/index.php/rpu/article/view/262978.