Rahmi S. Headmaster’s Leadership in Solving Problems at Islamic Elementary School (SDI) Hikmatul Fadhillah Medan. JPI [Internet]. 2019 Jan. 18 [cited 2025 Dec. 5];7(2):267-80. Available from: https://ejournal.uin-suka.ac.id/tarbiyah/JPI/article/view/2174