References
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- Charlop , MH . 1983 . The effects of echolalia on acquisition and generalization of receptive labeling in autistic children . Journal of Applied Behavior Analysis , 16 : 111 – 126 .
- Charlop-Christy , MH , Carpenter , M , Le , L , LeBlanc , LA and Kellet , K . 2002 . Using the Picture Exchange Communication System (PECS) with children with autism: Assessment of PECS acquisition, speech, social-communicative behavior, and problem behavior . Journal of Applied Behavior Analysis , 35 : 213 – 231 .
- Frost , LA and Bondy , AS . 1994 . The picture exchange communication system training manual , Cherry Hill, NJ : Pyramid Educational Consultants .
- Ganz , JB and Simpson , RL . 2004 . Effects on communicative requesting and speech development of the Picture Exchange Communication System in children with characteristics of autism . Journal of Autism and Developmental Disorders , 34 : 395 – 409 .