Association Between Parental Education, Occupation, Income, Language Activity, and Language Proficiency in Children. Indonesian Journal of Medicine, [S. l.], v. 1, n. 3, p. 152–159, 2017. DOI: 10.26911/theijmed.2016.1.3.25. Disponível em: https://theijmed.com/index.php/theijmed/article/view/25. Acesso em: 29 oct. 2026.