Ningrum, Lela Iman, Widya Kusumaningsih, and Soedjono. “The Influence of Principal’s Instructional Leadership and Work Motivation on Teachers’ Professional Competence”. Jurnal Educative: Journal of Educational Studies 10, no. 1 (June 30, 2025): 1–18. Accessed October 27, 2025. https://ejournal.uinbukittinggi.ac.id/index.php/educative/article/view/9392.