1. American Speech-Language-Hearing Association. (2005). Roles and responsibilities of speech-language pathologists serving persons with mental retardation/developmental disabilities [Guidelines]. Retrieved from http://www.asha.org/policy/GL2005-00061.htm
2. American Speech-Language-Hearing Association. (2010). Roles and responsibilities of speech-language pathologists in schools [Professional Issues Statement]. Retrieved from http://www.asha.org/policy/PI2010-00317/
3. American Speech-Language-Hearing Association. (2014). 2014 schools survey. Survey summary report: Number and type of responses SLPs. Retrieved from http://www.asha.org/research/memberdata/schoolssurvey/
4. Increasing communication in children with concurrent vision and hearing loss;Brady N.;Research and Practice for Persons with Severe Disabilities,2009