| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Forget Strategy. Get Results.: Radical Management Attitudes That Will Deliver Outstanding Success | 978-1-118-80878-8 (1-118-80878-9) | 2014 | ||
| Negotiating in German | 978-3-468-42611-7 (3-468-42611-9) | 1994 | Ulrich Hoffmann | |