J J · J.K · Jeff Kolby
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| GMAT Math Prep Course | 978-1-889057-50-7 (1-889057-50-9) | 2009 | Derrick Vaughn |
| SAT Math Bible | 978-1-889057-48-4 (1-889057-48-7) | 2008 | |
| SAT Prep Course: With Online Course and Software | 978-1-889057-46-0 (1-889057-46-0) | 2007 | |