LUMBAN GAOL, D. B.; NAPITUPULU, S. .; DAMANIK, B. A. R. . Communicative Functions of Umpasa in Toba Batak Traditional Ceremonies : Communicative Functions of Umpasa in Toba Batak Traditional Ceremonies. Journal of Applied Linguistics , [S. l.], v. 6, n. 1, p. 210–218, 2026. DOI: 10.52622/joal.v6i1.707. Disponível em: https://journal.eltaorganization.org/index.php/joal/article/view/707. Acesso em: 2 aug. 2026.