Mueangmuang, J., Jaroensuk, B., & Boonchit, Y. (2021). Self - Development Model of Teachers in Learning Management in the 21st Century under The Secondary Educational Area Office Surat Thani. Journal of the Association of Researchers, 26(4), 21–42. retrieved from https://so04.tci-thaijo.org/index.php/jar/article/view/249873