1. Pfister, O.,Christianity and Fear, London, George Allen and Unwin, 1949 (1944).
2. Meng, H., and Freud, F., eds.,Psychoanalysis and Faith. The Letters of Sigmund Freud and Oskar Pfister. New York, Basic Books, 1963.
3. Pfister, O., ?Die Illusion einer Zukunft,?Imago, 1929,14, 149?184.
4. Freud, S.,The Future of an Illusion. Garden City, N.Y., Doubleday and Co., 1964 (1927).
5. Meng and Freud,op. cit., p. 109.