Boonphum S, Piampuechana N. THE RELATIONSHIP BETWEEN LEADERSHIP OF ADMINISTRATORS AND WORKING MOTIVATION OF TEACHERS IN EDUCATIONAL OPPORTUNITY EXPANSION SCHOOLS UNDER CHAIYAPHUM PRIMARY EDUCATIONAL SERVICE AREA OFFICE 1. JBER [internet]. 2022 Apr. 30 [cited 2026 Aug. 28];8(1):204-16. available from: https://so06.tci-thaijo.org/index.php/jber/article/view/256959