จงเกียรติกาญจน์ พ. . (2020). 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(2-02), 571–584. Retrieved from https://so03.tci-thaijo.org/index.php/jssr/article/view/242198