Home › Authors › Petrūska Clarkson 👤 Petrūska Clarkson b. 1947 · 7 books Books by Petrūska Clarkson Psychotherapy as positive psychology 2005 The Achilles syndrome 1998 Change in organisations 1995 The therapeutic relationship i The therapeutic relationship in psychoanalysis, counselling psychology and psychotherapy 1995 The handbook of psychotherapy 1994 Fritz Perls 1993 On the sublime 1612