PANGGABEAN, A. J.; LUMBANGAOL, S.; SIAHAAN, T. A. Improving the Effectiveness of the Music Team and Song Leader through Worship Service Coordination Training at HKBP Immanuel Patumbak Church. Samakta: Jurnal Pengabdian Kepada Masyarakat, [S. l.], v. 3, n. 1, p. 35–43, 2026. DOI: 10.61142/samakta.v3i1.292. Disponível em: https://ejournal.edukhatulistiwa.com/index.php/samakta/article/view/292. Acesso em: 25 feb. 2026.