APA-čujuhus (7. p.)
Philippson, P. (2012). Gestalt therapy: Roots and branches : collected papers. Karnac.
Chicago-čujuhus (17. p.)
Philippson, Peter. Gestalt Therapy: Roots and Branches : Collected Papers. London: Karnac, 2012.
MLA-čujuhus (9. p.)
Philippson, Peter. Gestalt Therapy: Roots and Branches : Collected Papers. Karnac, 2012.
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