A.V, O. Education of the sound standard of speech at children of an average preschool age. International Journal of Social Sciences and Humanities Invention, [S. l.], v. 4, n. 2, p. 3318–3320, 2017. DOI: 10.18535/ijsshi/v4i2.10. Disponível em: https://valleyinternational.net/index.php/theijsshi/article/view/749. Acesso em: 30 apr. 2024.