Paperback
details (USA).
details (United Kingdom).(see also: Unbound)
details (Italy).(see also: Copertina flessibile)
details (Spain - España).(see also: Tapa blanda)
ISBN: 978-0-470-40449-2
ISBN-10: 0-470-40449-3
Houghton Mifflin Harcourt · 2009