I already have the paperback versions. Not this one however, I got HarperVoyager's. The book is split in two volumes.

It's the same format and style as those found in this box set for those like me who bought it: http://www.amazon.com/Game-Thrones-VOLUME-BOX-SET/dp/B005MGAM82/ref=sr_1_2?s=books&ie=UTF8&qid=1333828930&sr=1-2

EDIT links: http://www.bookdepository.co.uk/Dance-With-Dragons-Part-1-Dreams-Dust-George-Martin/9780007466061 http://www.bookdepository.co.uk/Dance-With-Dragons-Part-2-After-Feast-George-Martin/9780007466078 plus free worldwide delivery