จงเกียรติกาญจน์ พิมพิชญา. “A LEADERSHIP DEVELOPMENT MODEL FOR MIDDLE MANAGEMENT OF PRIVATE SCHOOL UNDER UDON THANI EDUCATIONAL SERVICE AREA OFFICE 1”. Journal of MCU Social Science Review 6, no. 2-02 (April 24, 2020): 571–584. Accessed May 19, 2024. https://so03.tci-thaijo.org/index.php/jssr/article/view/242198.