GreenspanS. I.WiederS. (1999). A functional developmental approach to autism spectrum disorders. Journal of the Association for Persons With Severe Handicaps, 24, 147–161.
2.
HeflinL. J.SimpsonR. L. (1998). Interventions for children and youth with autism: Prudent choices in a world of exaggerated claims and empty promises. Part I: Intervention and treatment option review. Focus on Autism and Other Developmental Disabilities, 13, 194–211.
3.
KoegelL. K.LaZebnikC. (2004). Overcoming autism: Finding the answers, strategies, and hope that can transform a child's life. New York: Viking.