| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2005 | 978-0-9773954-0-8 | Marshall Howard | Let's Have Lunch Together: How to Reach Out and Build More Powerful Relationships |
| 2010 | 978-0-9773954-1-5 | '' | Let's Have Lunch Together (How to Reach Out and Build More Powerful Relationships, 4-Disk Audio Edition) |
| 978-0-9773954-2-2 | '' | 6 Relationship Secrets to Easily Raise Money -Video Training by Marshall Howard |