Yusup, Muhammad, Muhammad Dirga, and Rifai Hasan Sholeh. “Leadership Effectiveness: Education for Sustainable Development”. Development: Studies in Educational Management and Leadership 3, no. 2 (December 31, 2024): 147–158. Accessed October 15, 2025. https://journal.iainlhokseumawe.ac.id/index.php/development/article/view/4845.