PURBA, A. R.; SITUMORANG, R. T. R.; SIREGAR, A. J.; TIFANY. Language Variation in Tradistional Ceremony of the Batak Toba: A Sociaolinguistic Analysis. Jurnal Pembelajaran Bahasa dan Sastra, [S. l.], v. 4, n. 6, p. 1535–1546, 2025. DOI: 10.55909/jpbs.v4i6.976. Disponível em: https://pembahas.dialeks.id/index.php/jp/article/view/976. Acesso em: 10 jun. 2026.