Suparman, Suparman. “Membangun Kerja Sama Pemimpin Di Sekolah Kristen: Perspektif Teologis Atas Hambatan Dan Solusinya [Building Leadership Collaboration in Christian Schools: A Theological Perspective on Challenges and Solutions]”. Diligentia: Journal of Theology and Christian Education 7, no. 3 (September 30, 2025): 189–211. Accessed November 20, 2025. https://ojs.uph.edu/index.php/DIL/article/view/10227.