Frost, L. A., & Bondy, A. S. (2002). The Picture Exchange Communication System: Training manual for parents and professionals. Pyramid Educational Consultants, Inc.

This is one of the original manuals on PECS, which offers detailed instructions for training both parents and professionals.

Bondy, A. S., & Frost, L. A. (1994). The Picture Exchange Communication System. Focus on Autistic Behavior, 9(3), 1-19.

This paper provides the foundation and research evidence for PECS and its effectiveness as an alternative communication method.

Charlop-Christy, M. H., Carpenter, M., Le, L., & Dalton, M. (2002). Using the Picture Exchange Communication System (PECS) with children with autism: Assessment of PECS acquisition, social communication, and problem behaviors. Journal of Applied Behavior Analysis, 35(3), 213-231.

A study on how PECS can be used to improve communication and reduce problem behaviors in children with autism.

Smith, M. D., & Schreibman, L. (2000). The effects of the Picture Exchange Communication System (PECS) on the verbal communication of children with autism. Journal of Autism and Developmental Disorders, 30(4), 381-391.

This article evaluates how PECS helps in the development of verbal communication in children with autism.

Tincani, M., & Devis, M. (2004). A review of the Picture Exchange Communication System (PECS) for children with autism spectrum disorder. Journal of Positive Behavior Interventions, 6(3), 132-144.

A review of research and evidence on PECS for children with autism, detailing both successes and challenges.

Ganz, J. B., & Simpson, R. L. (2004). A comprehensive review of the Picture Exchange Communication System for children with autism. Journal of Autism and Developmental Disorders, 34(3), 233-247.

A review that consolidates the research on the use of PECS and its effectiveness in enhancing communication skills for children with autism.

Schwartz, I. S., & Garfinkle, A. N. (2002). The use of Picture Exchange Communication System (PECS) to teach communication to children with autism in inclusive preschool classrooms. Journal of Early Intervention, 25(3), 185-199.

This paper explores the use of PECS in preschool classrooms, specifically in inclusive settings, and how it can help children with autism interact.

Miller, M. C., & Schutz, C. M. (2013). Using PECS to teach communication to individuals with autism spectrum disorder. In L. A. Frost & A. S. Bondy (Eds.), The Picture Exchange Communication System (PECS): A research-based, evidence-based intervention (pp. 1-29). Pyramid Educational Consultants, Inc.

A chapter within a book that focuses on how PECS can be applied to improve communication skills in individuals with autism.

Pechman, L., & Bondy, A. S. (2005). PECS and social communication in children with autism. Behavioral Interventions, 20(2), 67-80.

An article that evaluates the role of PECS in teaching social communication to children with autism.

Carr, E. G., & Felce, D. (2002). The Picture Exchange Communication System (PECS): An evaluation of its effectiveness. Journal of Applied Behavior Analysis, 35(2), 203-213.

This paper presents an evaluation of the effectiveness of PECS in facilitating communication for individuals with developmental disabilities.