K.P. · K. Paul · Paul Kaufmann
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Sensible Listening: The Key to Responsive Interaction | 978-1-4652-7316-1 (1-4652-7316-6) | 2015 |
| Sensible Listening: The Key to Responsive Interaction | 978-0-7575-6747-6 (0-7575-6747-9) | 2009 |