LUMBAN TOBING, Rhaffael Sebastian; FAJARIYANTO, Tri Chandra. The Implementation of Norms for Liturgical Songs and Musical Instruments by Catholic Youth in the St. Raphael Sub-Parish, Saitnihuta. International Journal of Christian Education and Philosophical Inquiry, [S. l.], v. 2, n. 3, p. 96–102, 2025. DOI: 10.61132/ijcep.v2i3.377. Disponível em: https://international.aripafi.or.id/index.php/IJCEP/article/view/377. Acesso em: 8 mar. 2026.