- Author: Raghu Raghavan
- Language: English
- Year: 2005
- Author: Geraldine Holt, Steve Hardy, Nick Bouras
- Language: English
- Year: 2014
- Author: Lori Holyfield
- Language: English
- Year: 2011
- Author: Amy L. Sutton
- Language: English
- Year: 2012
- Author: Amy Sutton
- Language: English
- Year: 2011
- Author: Helen B. McIntosh
- Language: English
- Year: 2009
- Author: Division of Mental Health and Behavioral Medicine
- Language: English
- Year: 1979
- Author: National Research Council, Division of Behavioral and Social Sciences and Education, Commission on Behavioral and Social Sciences and Education, Committee on Child Development Research and Public Policy, Panel on Selection and Placement of Students in Programs for the Mentally Retarded, National Academy of Sciences
- Language: English
- Year: 1982
