Suhery, Dedy, Dessy Kurniasy, Zahratul Idami, Shafridawati, and Rahmadsyah Rangkuti. 2025. “Phonological Contrasts in Bahasa Indonesia and Singkil Language: Variability and Identity Among Singkils”. LingPoet: Journal of Linguistics and Literary Research 6 (2):83-95. https://idjpcr.usu.ac.id/lingpoet/article/view/20981.