International directory of mental retardation resources /
edited by Rosemary F. Dybwad.

APA Citation

Dybwad, R. Ferguson., International League of Societies for Persons with Mental Handicap., United States. President's Committee on Mental Retardation. (1989). International directory of mental retardation resources. 3rd ed., 1986-89. Washington, D.C.: U.S. Dept. of Health and Human Services, President's Committee on Mental Retardation .

MLA Citation

Dybwad, Rosemary Ferguson, 1910-, International League of Societies for Persons with Mental Handicap, and United States. President's Committee on Mental Retardation. International Directory of Mental Retardation Resources. 3rd ed., 1986-89. Washington, D.C.: U.S. Dept. of Health and Human Services, President's Committee on Mental Retardation , 1989.