HAMDAN; LIA YULIANA. The Influence of Principals’ Managerial Competence, Academic Supervision and Teachers’ Education Level on the Performance of Public Junior High School Teachers in Kuala Kampar Sub-District. International Journal of Educational Technology Research, [S. l.], v. 3, n. 1, p. 318–333, 2025. DOI: 10.59890/ijetr.v3i1.582. Disponível em: https://jurnalinternasional.com/index.php/ijetr/article/view/582. Acesso em: 14 jun. 2026.