D. . Soukotta, L. Liantoro, M. Halawa, and D. Pasaribu, Trans., “Character and Faith Formation of Children through Christian Religious Education: Collaboration of Teachers, Parents, and Sunday School in the Digital Era”, KJT, vol. 8, no. 2, pp. 119–140, Sep. 2026, doi: 10.47178/wj36nx36.