Namsak, Sawanya, and Ratchaniphen Phonyiam. “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, no. 3 (December 29, 2024): 129–140. accessed September 28, 2026. https://so06.tci-thaijo.org/index.php/edu-rmu/article/view/274630.