GoldM. W.Research on the vocational habitation of the retarded: The present, the future. In EllisN. R. (Ed.), International Review of Research in Mental Retardation (Vol. 6). New York: Academic Press, 1973.
2.
KnightO. B.Occupational aspirations of the educable mentally retarded. Training School Bulletin, 1972, 69, 54–57.
3.
KolstoeO. P.An examination of some characteristics which discriminate between employed and not-employed mentally retarded males. American Journal of Mental Deficiency, 1961, 66, 472–482.
4.
KolstoeO. P.FreyR. M.A high school work-study program for mentally subnormal students. Carbondale: Southern Illinois Press, 1965.
5.
RobinsonH.RobinsonN.The mentally retarded child: A psychological approach. New York: McGraw-Hill, 1965.