Zaetz, J. L. (1971). Organization of sheltered workshop programs for the mentally retarded adult. Thomas.
Chicago-viite (17. p.)Zaetz, Jay L. Organization of Sheltered Workshop Programs for the Mentally Retarded Adult. Springfield, Ill.: Thomas, 1971.
MLA-viite (8. p.)Zaetz, Jay L. Organization of Sheltered Workshop Programs for the Mentally Retarded Adult. Thomas, 1971.
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