1. Erickson W, Lee C, Von Schrader S. Disability Status Report: United States. Ithaca, NY:Cornell University Yang-Tan Institute on Employment and Disability (YTI).
2. 2014 Disability Statistics Annual Report. A Publication of the Disability Statistics & Demographics Rehabilitation Research & Training Center;S. Stoddard;Institute on Disability, University of New Hampshire,2014
3. Estimating the impact of caregiving and employment on well-being;J. Coughlin;Center for Health Research, Healthways, Incorporated,2010
4. Parents of adults with intellectual and developmental disabilities (IDD) and compound caregiving responsibilities;Y Lunsky;Journal of child and family Studies,2017