| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Certified Energy Manager Exam Flashcard Study System: CEM Test Practice Questions & Review for the Certified Energy Manager Exam | 978-1-60971-678-3 (1-60971-678-7) | 2013 |
| Certified Energy Manager Exam Secrets Study Guide: CEM Test Review for the Certified Energy Manager Exam | 978-1-60971-677-6 (1-60971-677-9) | 2013 |
| Certified Energy Manager Exam Secrets Study Guide: CEM Test Review for the Certified Energy Manager Exam | 978-1-61403-083-6 (1-61403-083-9) | 2013 |