| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Entrepreneurial American Cities | 978-99912-78-41-4 (99912-78-41-9) | 1985 | Robert Duckworth · Robert McNalty |
| The Invisible Grail: How Brands Can Use Words to Engage with Audiences | 978-1-904879-69-5 (1-904879-69-1) | 2006 | |