There are several highly recommended PCCN review books available, but some of the best ones include:
1. "PCCN Review Book 2020-2021: PCCN Study Guide and Practice Test Questions for the Progressive Care Certified Nurse Exam" by Ascencia Nursing Exam Prep Team
2. "PCCN Exam Secrets Study Guide: PCCN Test Review for the Progressive Care Certified Nurse Exam" by PCCN Exam Secrets Test Prep Team
3. "PCCN Review Book: Study Guide and Practice Test Questions for the Progressive Care Certified Nurse Exam" by Trivium Test Prep
4. "PCCN Certification Review" by Patricia Juarez
These books provide comprehensive coverage of the material tested on the PCCN exam, including practice questions and detailed explanations to help you prepare effectively. Ultimately, the best PCCN review book for you will depend on your learning style and preferences, so it may be helpful to read reviews and sample chapters before making a decision.