Não informado. (2011). Education and Training in Mental Retardation. Council for Exceptional Children, Division on Mental Retardation.
Chicago Style (17. basım) AtıfNão informado. Education and Training in Mental Retardation. Reston, Va: Council for Exceptional Children, Division on Mental Retardation, 2011.
MLA (8th ed.) AtıfNão informado. Education and Training in Mental Retardation. Council for Exceptional Children, Division on Mental Retardation, 2011.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..