Setiawan, Teguh, Muhammad Yusuf, and Choirudin Choirudin. 2026. “Delegation-Based Leadership Management in Sustaining School Quality: A Case Study at SMP Al Falakussa’adah Tanjung Serupa”. Assyfa Journal of Multidisciplinary Education 4 (2). https://journal.assyfa.com/index.php/ajme/article/view/1255.