| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| How to Open & Operate a Financially Successful Consulting Business - With Companion Cd-Rom | 978-1-60138-016-6 (1-60138-016-X) | 2008 |
| How to Open & Operate a Financially Successful Herb and Herbal Plant Business: With Companion CD-ROM | 978-1-60138-329-7 (1-60138-329-0) | 2011 |
| The Complete Guide to Running Successful Workshops & Seminars Everything You Need to Know to Plan, Promote and Present a Conference Explained Simply | 978-1-60138-613-7 (1-60138-613-3) | 2014 |