Wright, D., & Digby Anne. (1996). From idiocy to mental deficiency: Historical perspectives on people with learning disabilities. Routledge.

Wright, David, and Digby Anne. From Idiocy to Mental Deficiency: Historical Perspectives on People with Learning Disabilities. London ; New York: Routledge, 1996.

Wright, David, and Digby Anne. From Idiocy to Mental Deficiency: Historical Perspectives on People with Learning Disabilities. Routledge, 1996.