| title | ISBN-13 | year of publication |
|---|---|---|
| GMAT Math Challenge: 1,000 Advanced Quant Problems | 978-1-4563-8212-4 | 2010 |
| GMAT Math Fundamentals: 800 Practice Quant Problems | 978-1-4563-8236-0 | 2010 |
| Total GMAT Math | 978-1-4537-7231-7 | 2010 |
| Total GMAT Verbal | 978-1-4611-5334-4 | 2011 |