SIREGAR, A. N. A valid, practical, and effective transformational leadership–based educational management model for improving elementary school teachers’ performance in padang lawas regency. Indonesian Journal Education, [S. l.], v. 5, n. 1, p. 83–92, 2026. DOI: 10.56495/ije.v5i1.1536. Disponível em: https://jurnal.larisma.or.id/index.php/IJE/article/view/1536. Acesso em: 24 feb. 2026.