Shepard, M. (1976). Fritz: An intimate portrait of Fritz Perls and Gestalt therapy. Bantam.
Čikaški stil citiranja (17. izdanje)Shepard, Martin. Fritz: An Intimate Portrait of Fritz Perls and Gestalt Therapy. Toronto ; London: Bantam, 1976.
MLA način citiranja (8. izdanje)Shepard, Martin. Fritz: An Intimate Portrait of Fritz Perls and Gestalt Therapy. Bantam, 1976.
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