Career Press · verlag moderne industrie
| title | ISBN-13 (ISBN-10) | year of publica- tion | |
|---|---|---|---|
| Effizient von 9 bis 5 | 978-3-478-74310-5 (3-478-74310-9) | 2002 | |
| How to Manage Conflict: Turn All Conflicts into Win-Win Outcomes | 978-1-56414-440-9 (1-56414-440-2) | 1999 |