| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Flashcard Study System for the Professional Certified Investigator Exam: PCI Test Practice Questions & Review for the Professional Certified Investigator Exam | 978-1-61072-495-1 (1-61072-495-X) | 2013 |
| Secrets of the Professional Certified Investigator Exam Study Guide: PCI Test Review for the Professional Certified Investigator Exam | 978-1-61072-494-4 (1-61072-494-1) | 2013 |