Lumban Tobing OS. PERANAN UMPASA/UMPAMA DALAM BUDAYA BATAK TOBA TERHADAP KATEKESE DI PAROKI SANTO PAULUS ONAN RUNGGU. IVL [Internet]. 2021 Feb. 27 [cited 2024 Dec. 22];4(1):23-31. Available from: http://e-jurnalstpbonaventura.ac.id/index.php/JURKAPS/article/view/47