Here are two books I think cover ice climbing really well:

• Will Gadd: http://www.amazon.ca/Ice-Mixed-Climbing-Modern-Technique/dp/089886769X/ref=sr_1_2?ie=UTF8&qid=1356899545&sr=8-2
• Gresham and Parnell: http://www.amazon.ca/Winter-Climbing-Neil-Gresham/dp/1873341962/ref=sr_1_16?ie=UTF8&qid=1356899545&sr=8-16

And a bonus... while not strictly speaking a book on ice climbing, it has a tremendous amount of useful ideas.

• Twight: http://www.amazon.ca/Extreme-Alpinism-Climbing-Light-High/dp/0898866545/ref=sr_1_13?ie=UTF8&qid=1356899545&sr=8-13

I will cover some good internet resources in a separate post.

What books can you recommend?

Will Gadd's book is the best (I think) ...

Here is the another one ...

Ice World: Techniques and Experiences of Modern Ice Climbing

http://www.amazon.com/Ice-World-Techniques-Experiences-Climbing/dp/0898864461

I have Ivon's book in pdf. Old book but still good read ...