Thongpoyai, Suchawalee, and Niyada Piampuchana. 2023. “STRATEGIC LEADERSHIP OF SCHOOL ADMINISTRATORS AFFECTING THE EFFECTIVENESS OF SCHOOLS UNDER UDON THANI SECONDARY EDUCATIONAL SERVICE AREA OFFICE”. Journal of Buddhist Education and Research (JBER) 9 (1):1-14. https://so06.tci-thaijo.org/index.php/jber/article/view/263398.