Srichaem ์. ETHICAL LEADERSHIP OF SCHOOL ADMINISTRATORS OF INSTITUTE OF VOCATIONAL EDUCATION: CENTRAL REGION 1 UNDER THE OFFICE OF VOCATIONAL EDUCATION COMMISSION. ptujournal [internet]. 2022 Dec. 28 [cited 2026 Sep. 28];14(2):67-82. available from: https://so05.tci-thaijo.org/index.php/ptujournal/article/view/259506