Mental retardation :
definition, classification, and systems of supports.

APA Citation

American Association on Mental Retardation. (2002). Mental retardation: definition, classification, and systems of supports. 10th ed. Washington, D.C.: American Association on Mental Retardation.

MLA Citation

American Association on Mental Retardation. Mental Retardation: Definition, Classification, And Systems of Supports. 10th ed. Washington, D.C.: American Association on Mental Retardation, 2002.

Warning: These citations may not always be complete (especially for serials).