Language Acquisition (LA): Linguistic Errors in the Speech of a Four-Year-Old Batakese Child. AL FARABI : Journal of Educational Research, [S. l.], v. 2, n. 1, p. 1–11, 2025. Disponível em: https://journal.alfarabibilingual.sch.id/index.php/alfarabi/article/view/36. Acesso em: 15 sep. 2025.