The contribution of alternative communication PECS - (method for exchanging figures) in the functional communication of autistic children. Research, Society and Development, [S. l.], v. 10, n. 1, p. e33210111798, 2021. DOI: 10.33448/rsd-v10i1.11798. Disponível em: https://www.rsdjournal.org/rsd/article/view/11798. Acesso em: 5 dec. 2025.