| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Understanding Graphology: How to Interpret Handwriting | Hardcover | 978-1-85501-621-7 (1-85501-621-4) | 1995 |
| Understanding Graphology: How to Interpret Handwriting | Paperback | 978-0-00-412530-5 (0-00-412530-4) | 1990 |