The Role of Principal Leadership in Improving Teacher Discipline at Public Elementary School 4 Tungoi 1. An-Nubuwwah: Journal of Islamic Studies, [S. l.], v. 3, n. 2, p. 252–263, 2024. DOI: 10.65345/anjis.v3i2.62. Disponível em: https://journal.iaimkotamobagu.ac.id/index.php/annubuwwah/article/view/62.. Acesso em: 1 feb. 2026.