- American Association on Intellectual and Developmental Disabilitieswww.aaidd.org
- Administration for Community Living – US Department of Health and Human Serviceswww.acl.gov
- Human Services Research Institutewww.hsri.org
- The Arcwww.thearc.org
- Association on University Centers on Disabilities (AUCD)www.aucd.org
- ASERT (Autism Services, Education, Resources and Training)www.paautism.org
