| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| PHR Exam Study Guide & Test Prep: Quick Study for the Professional in Human Resources Certification | 978-1-5167-0693-8 (1-5167-0693-5) | 2016 |
| PHR Study Guide & Test Prep: Quick Study for the Professional in Human Resources Certification Exam | 978-1-5167-0695-2 (1-5167-0695-1) | 2016 |