Phonemic-Phonological and Lexical Variations of Batak Toba Language: A Case of Language Use in Tapanuli Tengah and Tapanuli Utara. JELL [Internet]. 2026 Mar. 2 [cited 2026 Jul. 22];15(1):46-55. Available from: https://jell.ppj.unp.ac.id/index.php/jell/article/view/55