Some popular AP Human Geography review books include:
1. "Barron's AP Human Geography" by Meredith Marsh and Peter S. Alagona
2. "Cracking the AP Human Geography Exam" by The Princeton Review
3. "5 Steps to a 5: AP Human Geography 2021" by Carol Ann Gillespie
4. "AP Human Geography Crash Course" by Christian Sawyer
5. "AP Human Geography Prep Plus 2020 & 2021" by Kaplan Test Prep
These books provide comprehensive content review, practice questions, and test-taking strategies to help students prepare for the AP Human Geography exam.