1. Freud S.: Psychoanalysis and Faith, New York, Basic Books, p. 109, 1963.
2. Freud S.: New Introductory Lectures on Psychoanalysis, London, Hogarth Press, p. 218, 1933.
3. Freud S.: New Introductory Lectures on Psychoanalysis, London, Hogarth Press, p. 222, 1933.
4. Jeeves M. A.: Scientific Psychology and Christian Belief, Inter-Varsity Christian Fellowship, 39 Bedford Square, London, p. 12, 1967.