Super System/Brunson, et.al.
Theory of Poker/Sklansky
Small Stakes NLHE/Miller, Mehta, Flynn
Polished PokerAnhalt (Because it was a freebie)
That's pretty much it. All these pretty much say the same things. Miller's advice differs very little from what Brunson wrote in the Hold 'Em sections of Super System. It's still the same game, and all that's really changed is the terminology.
The only truly break-through volume is Theory of Poker as this one isn't about what you do, but rather how to think, and reason why you do what you do.