References
American Speech-Language-Hearing Association. (1991). Introduction to augmentative and alternative communication. Retrieved March 3, 2005, from http://www.asha.org/public/speech/disorders/Augmentative-and-Alternative.htm
American Speech-Language-Hearing Association. (n.d.). Report: Augmentative and alternative communication. Asha, 33(5), 9-12.
Baumgart, D., Helmstetter, E., & Johnson, J. (1990). Augmentative and alternative communication systems for persons with moderate and severe disabilities. Baltimore, MD: Paul H. Brookes Publishing Co.
Beukelman, D.R., & Mirenda, P. (1992). Augmentative and alternative communication: Management of severe communication disorders in children and adults. Baltimore, MD: Paul H. Brookes Publishing Co.
Cress, C., & Marvin, C. (2003). Common questions about AAC services in early intervention. AAC: Augmentative & Alternative Communication, 19. Retrieved March 31, 2005, from the Communication & Mass Media Complete database.
Hourcade, J., Parette, P., Pilotte, T.E., & West, E. (2004). A history of augmentative and alternative communication for individuals with severe and profound disabilities. Focus on Autism and Other Developmental Disabilities, 19(4). Retrieved February 17, 2005, from the PsycINFO database.
Romski, M, & Sevcik, R. (n.d.). AAC: More than three decades of growth and development. Retrieved March 3, 2005 from http://www.asha.org/public/speech/disorders/AAC_+More+Than+Three+Decades.htm