| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| COHN Exam Flashcard Study System: COHN Test Practice Questions & Review for the Certified Occupational Health Nurse Exam | 978-1-60971-450-5 (1-60971-450-4) | 2013 |
| COHN Exam Secrets Study Guide: COHN Test Review for the Certified Occupational Health Nurse Exam | 978-1-60971-449-9 (1-60971-449-0) | 2013 |