1. The Autism Survey;Campbell;Journal of Autism and Developmental Disorders,1996
2. Factors of the treatment environment;Jackson;Archives of General Psychiatry,1969
3. Patterns of Residential Care: Sociological Studies in Institutions for Handicapped Children;King,1971
4. Living in the community;Landesman-Dwyer;American Journal of Mental Deficiency,1981
5. The measurement of observer agreement for categorical data;Landis;Biometrics,1977