Lumban Gaol, D.B., Napitupulu, S. and Damanik, B.A.R. 2026. Communicative Functions of Umpasa in Toba Batak Traditional Ceremonies : Communicative Functions of Umpasa in Toba Batak Traditional Ceremonies. Journal of Applied Linguistics . 6, 1 (Jul. 2026), 210–218. DOI:https://doi.org/10.52622/joal.v6i1.707.