My favorites...
The Unemotional Football Bettor (#1 fav)
Sharp sports betting (mainly football, but lots of good info)
The best of Sonny Reizner (not really a how-to book, but a great read about what he went through in his life as a sports bettor.)
I've read and own just about every sports betting book there is, and these are my three favorites. (Honorable mention to "College basketball Handicapping: A Professional Approach" and "The Odds")
And remember that many times the best info you can get comes not from books from the forums themselves. I have many files of great advise from other posters.
:+thumbs-2