Best SAT Subject Test Books?

I want to take the literature, biology, and world history tests in august but I’m unsure as to what the best books to get are to help prepare/study? I noticed that college board sells some books but are they any good? I have also checked amazon and am seeing some mixed reviews and some that are outdated. Would a 2017 AP Book work?
What would you recommend?

@xiaolind I used the College Board’s books and online problems along with Barron’s. I would definitely recommend Barron’s and the overall subject test book since you are taking three. If possible, you should try getting them at your local library in order to save yourself some money (what I did). I took Math level 2 and U.S. History on June 3, and I am very confident with my performance.

The reason I would only get the overall book from the College Board is because the individual books share the same questions for the most part.