Campus Verlag · Simon & Schuster
| title | media type | ISBN-13 (ISBN-10) | year of publication | |
|---|---|---|---|---|
| Geschickt verhandeln, erfolgreich abschließen | Gebunden | 978-3-593-34079-1 (3-593-34079-8) | 1989 | |
| Negotiate to Close: How to Make More Successful Deals | Paperback | 978-0-671-62886-4 (0-671-62886-0) | 1987 | |
| Negotiate to Close: How to Make More Successful Deals | Hardcover | 978-0-671-55483-5 (0-671-55483-2) | 1985 |