Namsak, Sawanya, and Ratchaniphen Phonyiam. 2024. “The Development Guidelines for School Administrators’ Innovative Leadership, The Educational Service area Office in Roi Et Province”. Journal of Education Rajabhat Maha Sarakham University 21 (3). Maha Sarakham, Thailand:129-40. https://so06.tci-thaijo.org/index.php/edu-rmu/article/view/274630.