| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1996 | 978-0-9648377-0-6 | Andrew A. Helwig | Study Guide for the National Counselor Examination |
| 2000 | 978-0-9648377-2-0 | Andrew A. Helwig | Study Guide for the National Counselor Examination |
| 2006 | 978-0-9648377-4-4 | '' | Study Guide for the National Counselor Examination |
| 2011 | 978-0-9648377-5-1 | '' | Study Guide for the National Counselor Examination and CPCE |
| 2015 | 978-0-9648377-7-5 | '' | Study Guide for the National Counselor Examination and CPCE |