Effectiveness of the Picture Exchange Communication System (PECS) on Language and Speech of Children With Autism: A Metanalysis

Flippin, M., Reszka, S., & Watson, L. R.
2010
Citation: Flippin, M., Reszka, S., & Watson, L. R. (2010). Effectiveness of the Picture Exchange Communication System (PECS) on language and speech of children with autism: A metanalysis. American Journal of Speech-Language Pathology, 19, 178-195.