RICO-GONZÁLEZ, Markel. The effect of free play in preschoolers´ language improvement: a systematic review. Journal of Child Language Acquisition and Development - JCLAD , [S. l.], p. 1418–1430, 2025. DOI: 10.5281/zenodo.18173860. Disponível em: https://science-res.com/index.php/jclad/article/view/150. Acesso em: 18 apr. 2026.