| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| How to Read Your Customer-Client Like a Book: Body Language in Business | 978-0-929535-01-2 (0-929535-01-4) | 1992 |
| The Silent Speech of Politicians: Body Language in Government | 978-0-929535-00-5 (0-929535-00-6) | 1988 |