อินนะรา ศ., ตั้งคุณานันต์ ป., & บุญภักดิ์ ก. (2015). The leadership styles of school administrator affecting on the effectiveness of academic administration under the department of education bangkok metropolitan administration, ladkrabang district. Journal of Industrial Education, 14(3), 530–537. Retrieved from https://ph01.tci-thaijo.org/index.php/JIE/article/view/122821