Nainggolan, Maria Friska, Jheni Yusuf Saragih, Mei Lyna Girsang, Anita Yus, and Yusnadi Yusnadi. “An Integrative Principal Leadership Model: Strengthening Work Ethic, Organizational Commitment, and School Performance in Small-Scale Primary Schools”. Jurnal Tematik 15, no. 3 (August 28, 2026): 181–189. Accessed October 9, 2026. https://jurnal.unimed.ac.id/2012/index.php/tematik/article/view/74545.