best supplemental book for AP US History?

Test Preparation AP Test Preparation
1

<p>Barron's? Cliff's? Princeton Review? etc...</p>

2

<p>Amsco or REA hands down</p>

3

<p>yeah i agree, if you only want to buy one i would choose amsco.</p>

4

<p>Amsco is the best by far.</p>