Kang-onta, N. and Suaklay, N. (2026) “Guidelines for Developing 21st Century Management Skills for School Administrators Under the Chiang Rai Primary Educational Service Area Office 1”, Academic MCU Buriram Journal, 11(2), pp. 273–284. available at: https://so06.tci-thaijo.org/index.php/ambj/article/view/292582 (accessed: 29 September 2026).