| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| CIH Exam Flashcard Study System: CIH Test Practice Questions & Review for the Certified Industrial Hygienist Exam | 978-1-60971-355-3 (1-60971-355-9) | 2013 |
| CIH Exam Secrets Study Guide: CIH Test Review for the Certified Industrial Hygienist Exam | 978-1-60971-354-6 (1-60971-354-0) | 2013 |
| CIH Exam Secrets Study Guide: CIH Test Review for the Certified Industrial Hygienist Exam | 978-1-61403-016-4 (1-61403-016-2) | 2013 |