| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Assertiveness at Work: How to Increase Your Personal Power on the Job | 978-0-13-049494-8 (0-13-049494-1) | 1982 |
| Assertiveness at work: How to increase your personal power on the job | 978-0-13-049502-0 (0-13-049502-6) | 1982 |