Murniati, Murniati, and Fauzan Ahmad Siregar. “Principal Managerial Competence in Improving Organizational Performance”. Development: Studies in Educational Management and Leadership 1, no. 1 (June 30, 2022): 75–84. Accessed June 17, 2026. https://journal.uinsuna.ac.id/index.php/development/article/view/530.