ไพสิฐสกุลเกตุ จ, ไทยใจดี ย. THE SUPERLEADERSHIP OF SCHOOL ADMINISTRATORS UNDER UDON THANI PRIMARY EDUCATIONAL SERVICE AREA OFFICE 4. J Roi Et [internet]. 2017 Dec. 31 [cited 2026 Sep. 11];11(2):43-52. available from: https://so03.tci-thaijo.org/index.php/reru/article/view/176334