<p>thank you for the rec. I’ve already purchased cliffnotes for the AP English exam. </p>
<p>What I’m asking is that which one of these books is the “MUST KEEP IN YOUR LIBRARY” for later reference (I want to become a TRUE writer- that’s why I take AP Lang).</p>
<p>I have both. You should definitely buy The Elements of Style. If you are interested in writing nonfiction, On Writing Well would also be a good buy.</p>