Verny, T. R. (1974). Inside groups: A practical guide to encounter groups and group therapy. McGraw-Hill.
Παραπομπή Chicago StyleVerny, Thomas R. Inside Groups: A Practical Guide to Encounter Groups and Group Therapy. New York: McGraw-Hill, 1974.
Παραπομπή MLAVerny, Thomas R. Inside Groups: A Practical Guide to Encounter Groups and Group Therapy. McGraw-Hill, 1974.
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