| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Addiction: Questions and Answers for Counsellors and Therapists | 978-1-86156-333-0 (1-86156-333-7) | 2002 | |
| Group Psychotherapy & Addiction for Liberty University | 978-0-470-90010-9 (0-470-90010-5) | 2010 | |
| Group Psychotherapy and Addiction | 978-1-86156-448-1 (1-86156-448-1) | 2004 | Martin Weegmann |