Tobing, Andrew P.L., Himpun Panggabean, and Tengku Silvana Sinar. “Effect-for-Cause Inferencing in the Evaluation of Loudness Among Toba Batak People”. Sociolinguistic Studies 10, no. 3 (January 20, 2017): 455–474. Accessed July 16, 2024. https://journal.equinoxpub.com/SS/article/view/7358.