Tengku, S., A. S. . Hasibuan, and L. . Sinaga. “Stress in Angkola Batak Language: An Acoustic Phonetic Approach”. Linguistik Terjemahan Sastra (LINGTERSA), vol. 4, no. 2, Aug. 2023, pp. 46-53, doi:10.32734/lingtersa.v4i2.13451.