Best ACT prep books?

Hello everyone I was hoping someone could recommend me a very good ACT prep book. More specifically math and science. I don’t really need any more practice tests, but some good books on strategies and practice problems for me to do! I’d like to raise my 28 in math and 27 in science to at least 29’s. Hopefully there pretty current books and have very real and hard act problems to train me well. thank you!

Consider the ACT Black Book by Mike Barrett for strategy. Use the work through in the book (you will need the red book to go along with it).

I also recommend ACTQuantum website for Math review. The videos are excellent.