Green, S., Thummarat, P., & Pianthanyakarn, S. (2021). A Model for Developing Teacher Leadership on Instructional Management in Secondary Schools under the Regional Education Office No.11. Journal of Roi Et Rajabhat University, 15(2), 70–78. Retrieved from https://so03.tci-thaijo.org/index.php/reru/article/view/241849