Best sports handicapping books?

I just bought "Sharp Sports Betting" by Stanford Wong and "Weighing the Odds in Sports Betting" by King Yao. Has anyone else read these books? If so, what did you think? What are some other handicapping books that you have read that you would SWEAR by?

What I have been doing is not working, I'm hoping these books will lead to some insight.

I read about 8 chapters from "Weighing the Odds..." and they were all on the basics of betting, but it was all stuff I already knew. I stopped reading it because there wasn't much in there that can help me right now. There isn't any game by game or sport by sport best betting strategy. There is a chapter in there that I want to read come March Madness tourney time, but until then I doubt I pick this book again. Don't waste your money unless you are brand new to the betting game and don't have a clue.

Yea I'm looking forward to that one. I've heard a lot of good things about that one. The Yao book seems like a bit of a rip off from the Wong book.

Yeah you're right, there is some good material in there. I just got the Wong book, I like it so far. I'll probably have to read it twice.