| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The World of Commerce: Book 1 | 978-0-07-452836-5 (0-07-452836-X) | 1991 | E.D. Shade |
| The World of Commerce: Book 2 | 978-0-07-452837-2 (0-07-452837-8) | 1992 | " |
| World of Commerce: Book 3: Book 3 | 978-0-07-452838-9 (0-07-452838-6) | 1993 | " |