Baller, W.R., Charles, D.C. & Miller, E.L.Antecedents of change in mentally retarded persons at mid-life: A longitudinal study. Washington, D.C.: U.S. Dept. HEW, Vocational Rehabilitation Admin., 1965.
2.
Dunn, L.Special education for the mildly retarded : Is much of it justifiable?Exceptional Children, 1968, 35, 5-24.
3.
Jordan, T.Scholarship, research and changing practices. In Peck, J. R. (Ed.), Proceedings of the Institute for Advanced Study of Preparation of Teachers of the Mentally Retarded. Austin, Tex.: University of Texas, 1968. Pp. 43-63.
4.
Kennedy, R.J.R.A Connecticut community revisited : A study of the social adjustment of a group of mentally deficient adults in 1948 and 1960. Washington, D.C.: U.S. Office of Vocational Rehabilitation , 1962.
5.
Mead, M. In J. Magary and J. Eichorn (Eds.), The exceptional child: A book of readings. New York: Holt, Rinehart and Winston, 1960.
6.
Skeels, H.M.Adult status of children with contrasting early life experiences: A follow-up study. Monographs of the Society of Research in Child Development, No. 105, 1966, 31, 3.
