Saragih, Jon Albert, et al. “The Influence of Catechism Teaching, Lutheran Worship, and Pastoring towards Congregation Behavior: A Study in Gkli”. The International Journal of Social Sciences World (TIJOSSW), vol. 7, no. 1, May 2025, pp. 156-64, https://www.growingscholar.org/journal/index.php/TIJOSSW/article/view/514.