Kroobaa, kanchit. 2021. “THE RELATIONSHIP BETWEEN THE LEADERSHIP OF ADMINISTRATORS AND GUIDELINE FOR EDUCATIONAL QUALITY ASSURANCE UNDER SCHOOL OF CHIANGRAI PRIMARY EDUCATIONAL SERVICE AREA OFFICE 2”. Pathumthani University Academic Journal 13 (1):72-86. https://so05.tci-thaijo.org/index.php/ptujournal/article/view/249032.