Qulbi, Amar. “Principal As Manager (Managerial Competency), Principal As Supervisor”. Jurnal Ilmiah Wahana Pendidikan 11, no. 2.D (February 18, 2025): 1-7. Accessed April 30, 2025. http://jurnal.peneliti.net/index.php/JIWP/article/view/9895.