Robin Karr-Morse and Meredith S. Wiley, Ghosts from the Nursery: Tracing the Roots of Violence (New York: Atlantic Monthly Press, 1997), 27.
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H. M. Skeels and H. B. Dye, «А Study of the Effects of Different Stimulation on Mentally Retarded Children,» in Proceedings and Addresses of the American Association of Mental Deficiency, 44 (1939), 114-36.
