1. Oberndorf, C. P.: A History of Psychoanalysis in America, p. 56. Grune & Stratton. New York. 1953.
2. Ibid., pp. 56 & 57.
3. Ibid., p. 126.
4. Ibid., p. 236.
5. Kaufman, M. Ralph: The role of psychoanalysis in American psychiatry. Bull. Am. Psychoan. Assn., 6: 1–4, 1950.