Zega, Nice, Murnihati Gulo, Hadirman Gulo, and Erinida Gulo. “Parents As Christian Educators for Enhancing Cognitive Development of Children Aged 6–15 Years”. Jurnal Teologi Pambelum 5, no. 2 (February 28, 2026): 217–236. Accessed June 8, 2026. https://jurnal.stt-gke.ac.id/index.php/pambelumjtp/article/view/114.