Mental retardation, its biological factors.

APA Citation

National Institute of Neurological Diseases and Stroke. (1970). Mental retardation, its biological factors. [Rev. Bethesda, Md.: For sale by the Supt. of Docs., U. S. Govt. Print. Off., Washington.

MLA Citation

National Institute of Neurological Diseases and Stroke. Mental Retardation, Its Biological Factors. [Rev. Bethesda, Md.: For sale by the Supt. of Docs., U. S. Govt. Print. Off., Washington, 1970.