Batman: Hush and sequels?

[RedWings4Life]

SO I want to buy Batman: Hush and then Heart of Hush and House of Hush, but I was wondering if they are in one large book or if I have to buy them all serpeatly on amazon, which is a bit of hassle. So just wondering, and if so where can I get it online (in one book)?

 

[Aaron]

http://www.amazon.com/Batman-Hush-Jeph-Loeb/dp/1401223176

I believe that's all of it.