| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Business Upgrade: 21 Days to Reignite the Entrepreneurial Spirit in You and Your Team | 978-1-84112-744-6 (1-84112-744-2) | 2006 |
| Millionaire Upgrade: Lessons in Success from Those Who Travel at the Sharp End of the Plane | 978-1-84112-703-3 (1-84112-703-5) | 2006 |
P. C. · R. C. · R. P. · Richard C. · Richard P. · Richard Parkes