| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Advanced Skills and Interventions in Therapeutic Counseling | Paperback | 978-1-84590-017-5 (1-84590-017-0) | 2006 |
| Ego State Therapy | " | 978-1-84590-079-3 (1-84590-079-0) | 2007 |
| Ego State Therapy | Hardcover | 978-1-904424-00-0 (1-904424-00-7) | 2003 |