Singthongkul, Nongyao, and Amnuai Meerakar. 2021. “A Study on Creative Leaderships of School Administrators under the Office of Udonthani Primary Educational Area 1”. Academic MCU Buriram Journal 6 (1):146-58. https://so06.tci-thaijo.org/index.php/ambj/article/view/247438.