“The Role of Principal Leadership in Improving Teacher Discipline at Public Elementary School 4 Tungoi 1”. An-Nubuwwah: Journal of Islamic Studies 3, no. 2 (December 31, 2024): 252–263. Accessed February 1, 2026. https://journal.iaimkotamobagu.ac.id/index.php/annubuwwah/article/view/62.