Supathong , Narumon, Sawat Pothivat, and Surat Duangchathom. 2021. “An Excellent School Leadership According to the Principles of Sufficiency Economy: A Study to Create Grounded Theory”. Journal of Roi Et Rajabhat University 15 (1):98-109. https://so03.tci-thaijo.org/index.php/reru/article/view/237690.