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, vol. 7, no. 3, Sept. 2025, pp. 189-11, doi:10.19166/dil.v7i3.10227.