Barron's AP Biology, 4th Edition
CliffsNotes AP Biology, Fourth Edition
Cracking the AP Biology Exam, 2014 Edition (College Test Preparation)
Kaplan AP Biology 2014-2015 (Kaplan Test Prep)
Barron's AP Biology Flash Cards
5 Steps to a 5 AP Biology, 2014-2015 Edition (5 Steps to a 5 on the Advanced Placement Examinations Series)