1. Robbins, S. D. 1932. “The Relation Between the Short Auditory Memory Span Disability and Disorders of Speech,”. Formal Papers presented at the Seventh Annual Convention of the American Speech Correction Association. 1932. Edited by: West, Robert.
2. West, R., Kennedy, L. and Carr, A. 1937.The Rehabilitation of Speech., 108New York: Harpers and Brothers.
3. EXPERIMENTS ON “PREHENSION”