Which ACT books to buy?

<p>I'm currently at about a 29 on a mock ACT, but that's without any test prep or previous practice tests, so I expect that my score will go up at least a bit. However, I do want about a 33 or a 34 so I need to prep for the ACT. My main worry is the Science section because it is very speed based. I also need to work on the English and Reading sections, but not Math. Does anyone have any book recommendations?</p>