“A Comparative Study of Principals’ Transformative Leadership: A Qualitative Analysis at SMA Negeri 3 Tarutung and SMA Negeri 1 Siborongborong” (2025) JMKSP (Jurnal Manajemen, Kepemimpinan, dan Supervisi Pendidikan), 10(2), pp. 1106–1116. doi:10.31851/9mdh9m17.