Humairoh, Widya Belqis, and Hasyim Asy’ari. “Comparison of Successful Principal Leadership Models (literature Study in Indonesia and Finland)”. Gema Wiralodra 15, no. 3 (January 6, 2025): 952–962. Accessed April 5, 2026. http://gemawiralodra.unwir.ac.id/index.php/gemawiralodra/article/view/772.