Hardcover 2006 Year Gollancz / Orion / SFBC Publisher ISBN-13: 978-0-575-07766-9 ISBN-10: 0-575-07766-2 Buy on Amazon
Paperback 2011 Year Gollancz Publisher ISBN-13: 978-0-575-11500-2 ISBN-10: 0-575-11500-9 Buy on Amazon
Digital Books 2016 Year Gateway / Orion Publisher ISBN-13: 978-1-4732-1533-7 ISBN-10: 1-4732-1533-1 Not Available for Purchase