Não informado. (2011). Education and Training in Mental Retardation. Council for Exceptional Children, Division on Mental Retardation.
Chicago-viite (17. p.)Não informado. Education and Training in Mental Retardation. Reston, Va: Council for Exceptional Children, Division on Mental Retardation, 2011.
MLA-viite (8. p.)Não informado. Education and Training in Mental Retardation. Council for Exceptional Children, Division on Mental Retardation, 2011.
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