MOHAMMED ALMUTAIRI. The Effectiveness of Picture Exchange Communication System (PECS) in Treating Echolalia in Autistic Children . Migration Letters, London, UK, v. 20, n. S10, p. 779–787, 2023. DOI: 10.59670/ml.v20iS10.5406. Disponível em: https://migrationletters.com/index.php/ml/article/view/5406. Acesso em: 27 jul. 2024.