| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2015 | 978-0-9967379-0-6 | Gary Gruber | Gruber's GRE Strategies, Practice, and Review 2015-2016 |
| '' | 978-0-9967379-1-3 | Gary Gruber | Gruber's ACT Strategies, Practice, and Review 2015-2016 |
| '' | 978-0-9967379-2-0 | '' | Gruber's 500 Essential SAT Math Questions: by Topic and Difficulty Vol. 1 (500 SAT Essential Math Questions) (Volume 1) |
| '' | 978-0-9967379-3-7 | '' | Gruber's 500 Essential SAT Math Questions: by Topic and Difficulty Vol. 2 (500 SAT Essential Math Questions) (Volume 2) |
| '' | 978-0-9967379-4-4 | '' | Gruber's 500 Essential GRE Math Questions: by Topic and Difficulty, Vol. 1 (Gruber's Essential GRE Math) (Volume 1) |
| 2015 | 978-0-9967379-6-8 | Gary Gruber | Gruber's Essential AP Psychology: by Topic and Difficulty (Volume 1) |
| '' | 978-0-9967379-8-2 | '' | Gruber's Essential AP Calculus AB: by Topic and Difficulty (Volume 1) |
| 2015 | 978-0-9967379-9-9 | Gary Gruber | Gruber's Essential AP Biology: by Topic and Difficulty (Volume 1) |