| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1995 | 978-0-9637371-0-6 | Jeff Kolby | Lsat: Complete Preparation and Training for the Lsat (The Prepcourse Series) |
| '' | 978-0-9637371-2-0 | Jeff Kolby | Gre Prepcourse (The Prepcourse Series) |
| 1996 | 978-0-9637371-3-7 | '' | Vocabulary 4000 |