Citazione Stile APA (7a Edizione)

(2002). Mental retardation: Definition, classification, and systems of supports. Workbook (10a. ed.). American Association on Mental Retardation.

Citazione stile Chigago Style (17a edizione)

Mental Retardation: Definition, Classification, and Systems of Supports. Workbook. 10a. ed. Washington, D.C: American Association on Mental Retardation, 2002.

Citatione MLA (9a ed.)

Mental Retardation: Definition, Classification, and Systems of Supports. Workbook. 10a. ed. American Association on Mental Retardation, 2002.