Best book on Limit Hold em

[CLo0uD]

Hi
I want to gift a friend of mine a book about limit (fixed) Hold em. He allways deposits 40$ and goes to 3$/6$ fixed limit on Stars.So the book should contain some sites about bankroll management in limit hold em. He also plays limit hold em sit& goes but most of the time i see him playing limit hold em cashgames.

He is playing limit since summer 2006
So i think he knows about the basics and he also has some experience in limit. But i think he doesnt know how to calculate odds
I never play Limit Hold em so i dont know what book could be the perfect one for him.