Wongwean, S. and Sonchan, C. 2023. Innovative Leadership of School Administrators Effecting Effectiveness of Teacher Performance Under Loei Primary Educational Service Area Office 2: Innovative Leadership of School Administrators Effecting Effectiveness of Teacher Performance Under Loei Primary Educational Service Area Office 2. RATANABUTH JOURNAL. 5, 3 (Dec. 2023), 166–182.