AULIANAFIKA RAHMANISSA BEDRIATY; CEPI SAFRUDDIN ABDUL JABAR. The Influence of Principals’ Instructional Leadership, Work Discipline, and Self-Concept on Vocational High Schools Teachers’ Professional Competence. International Journal of Educational Technology Research, [S. l.], v. 3, n. 1, p. 41–54, 2025. DOI: 10.59890/ijetr.v3i1.397. Disponível em: http://jurnalinternasional.com/index.php/ijetr/article/view/397. Acesso em: 29 apr. 2026.