Poonsawat, Adisorn, and Chissanapong Sonchan. “Integrative Leadership of School Administrators Affecting to 21st Century Learning Skills of School Under Secondary Educational Service Area Office Loei Nong Bua Lam Phu: Integrative Leadership of School Administrators Affecting to 21st Century Learning Skills of School Under Secondary Educational Service Area Office Loei Nong Bua Lam Phu”. RATANABUTH JOURNAL 5, no. 2 (August 31, 2023): 513–530. Accessed February 24, 2024. https://so07.tci-thaijo.org/index.php/rtnb/article/view/3273.