Perls, F. S. (1969). Ego, hunger, and aggression; the beginning of gestalt therapy. Random House.
Chicago-čujuhus (17. p.)Perls, Frederick S. Ego, Hunger, and Aggression; the Beginning of Gestalt Therapy. New York: Random House, 1969.
MLA-čujuhus (9. p.)Perls, Frederick S. Ego, Hunger, and Aggression; the Beginning of Gestalt Therapy. Random House, 1969.
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