| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1990 | 978-0-945439-00-4 | Gerald E. Mitchell | The Travel Consultant's On-Site Inspection Journal |
| 1994 | 978-0-945439-09-7 | Gerald E. Mitchell | Travel the World Free As an International Tour Director: How to Be an International Tour Director |
| 1992 | 978-0-945439-12-7 | Gerald E Mitchell | Tour designing and packaging |
| 1988 | 978-0-945439-13-4 | Gerald E. Mitchell | How to Be an International Tour Director and Travel the World |
| 2006 | 978-0-945439-14-1 | '' | Global Travel-Tourism Career Opportunities |