| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Start & Run a Consulting Business | 978-1-77040-045-0 (1-77040-045-1) | 2010 |
| Start & Run a Consulting Business | 978-1-55180-824-6 (1-55180-824-2) | 2008 |
B. L. · D B · D G · D. Gray · Douglas B. · Douglas Gray · G.B. · G L. · LLB, Douglas Gray BA