| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| SPEX Flashcard Study System: SPEX Test Practice Questions & Exam Review for the Special Purpose Examination | 978-1-61072-879-9 (1-61072-879-3) | 2013 |
| SPEX Secrets Study Guide: SPEX Exam Review for the Special Purpose Examination | 978-1-61072-878-2 (1-61072-878-5) | 2013 |