HarperCollins
2 July 2007
ISBN 978-0007210947

Amazon.co.uk
Play.com



Philomel Books
14 May 2009
ISBN 978-0399247279
$16.99 HC

Amazon.com


 


Puffin Books
10 June 2010
ISBN 978-0142415702
US$7.99 PB

Amazon.com