BARBIERI, M. S. The expression of certainty and uncertainty in Italian speaking children. Ricerche di Pedagogia e Didattica. Journal of Theories and Research in Education, [S. l.], v. 9, n. 1, p. 115–135, 2014. DOI: 10.6092/issn.1970-2221/4294. Disponível em: https://rpd.unibo.it/article/view/4294. Acesso em: 2 may. 2024.