Tarigan, Karisma Erikson, and Margaret Stevani. “The Belief System of Christianity and Tribal Religion in Hukurila’s Ritual”. International Journal of Cultural and Religious Studies 1, no. 1 (October 22, 2021): 24–32. Accessed January 16, 2026. https://al-kindipublishers.org/index.php/ijcrs/article/view/2264.