6Ellen M Hamm, Susan G Mistrett, Amy Goetz Ruffino. Play Outcomes and Satisfaction with Toys and Technology of Young Children with Special Needs . The Journal of Special Education, 2006, 21(1):29 - 36.
9Ae - hwa Kim & Sharon Vaughn . Effects of Toys or Group Composition for Children with Disabilities: A Synthesis. Journal of Early Intervention, 2003, 25(3):189- 205.
10Jiyeon Park, Ann P Turnbull, H Rutherford Turnbull . Impacts of Poverty on Quality of Life in Families of Children with Disabilities. Exceptional Children, 2002, 68 (2):151 - 170.