Appleton & Lange · McGraw-Hill
| title | ISBN-13 (ISBN-10)  | year of publica- tion  | other author(s) | 
|---|---|---|---|
| Critical Care Certification: Preparation, Review, and Practice Exams | 978-0-8385-1474-0 (0-8385-1474-X)  | 1997 | Thomas Ahrens | 
| Critical Care Nursing Certification: Preparation, Review and Practice Exams | 978-0-07-146586-1 (0-07-146586-3)  | 2006 | Thomas Ahrens · Ruth Kleinpell | 
| Critical Care Nursing Certification: Preparation, Review, and Practice Exams, Sixth Edition | 978-0-07-166789-0 (0-07-166789-X)  | 2010 | Thomas Ahrens R.N. · Ruth Kleinpell |