Paperback
details (USA).(see also: Audible Audiobook · eBook (Kindle))
details (UK).(see also: Audible Audiobook · eBook (Kindle))
details (Canada).(see also: eBook (Kindle) · Audible Audiobook)
ISBN: 978-0-375-87395-9
ISBN-10: 0-375-87395-3
Random House Books for Young Readers · 2011