| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| GED Secrets Study Guide | 978-1-63094-991-4 (1-63094-991-4) | 2015 |
| HiSET Secrets Study Guide | 978-1-5167-0529-0 (1-5167-0529-7) | 2014 |
| TASC Secrets Study Guide: TASC Exam Review for the Test Assessing Secondary Completion | 978-1-5167-0540-5 (1-5167-0540-8) | 2015 |