P. C. · P.P. · Petruska Clarkson
SAGE Publications · SAGE Publications, Inc
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Fritz Perls | 978-0-8039-8453-0 (0-8039-8453-7) | 1993 | Ms Jennifer Mackewn |
| Gestalt Counselling in Action | 978-1-4129-0085-0 (1-4129-0085-9) | 2004 | |
| Gestalt Counselling in Action | 978-0-7619-6313-4 (0-7619-6313-8) | 1999 | |