1. Bouyer, L.,A History of Christian Spirituality (3 Volumes). New York, Seabury, 1963, 1968, 1969; Holmes, U.,A History of Christian Spirituality. New York, Seabury, 1979.
2. English, J.,Choosing Life. New York, Paulist Press, 1978; Foster, R.,Celebration of Discipline. New York, Harper and Row, 1978; Leech, K.,Soul Friend. New York Harper and Row, 1977;Experiencing God. New York, Harper & Row, 1985.
3. Jacobi, J.,The Psychology of C.G. Jung. New Haven, Yale University Press, 1968; Homans. P.,Jing in Context. Chicago, University of Chicago Press, 1979.
4. Jacobi,op. cit. p. ix.
5. Homans, P., Jung in Context. Chicago, University of Chicago Press, 1979. p. 16.