“The Principal’s Leadership in Building a Culture of Discipline at School Background: A Case Study of Public Elementary School 065 XI in Desa Baru Debai”. JURNAL MUARA OLAHRAGA 8, no. 2 (July 30, 2006): 237–251. Accessed September 20, 2026. https://ejournal.ummuba.ac.id/index.php/pjkr/article/view/4257.