1. Harry Stack Sullivan, Interpersonal Theory of Psychiatry, H. S. Perry and M. L. Gawel, eds. (New York: Norton, 1953), pp. 16–18.
2. Francis S. A. Doran, Mind: A Social Phenomenon (New York: William Sloane Associates, 1953), p. 169.
3. Sullivan , Conceptions of Modern Psychiatry (New York: Norton, 1953), p. 4.
4. Dorothy R. Blitsten, The Social Theories of Harry Stack Sullivan (New York: William-Frederick Press. 1953), p. 58.
5. Bergen R. Bugelski, The Psychology of Learning (New York: Holt, Rinehart & Winston, 1956), chaps. 1, 4, 5.