Somboon, J. ., Nantasri, W., & Somsrisuk, A. (2022). A Study of the Current State, Desired State and Needs Analysis for Supervisory Competency Development Base on Self- directed Learning under the Office of the Basic Education Commission. Dhammathas Academic Journal, 22(4), 63–76. retrieved from https://so06.tci-thaijo.org/index.php/dhammathas/article/view/253210