Paperback
details (UK).(see also: Leather Bound)
details (United States).(see also: Audible Audiobook · eBook (Kindle))
details (Canada).(see also: eBook (Kindle) · Audible Audiobook)
ISBN: 978-0-241-95266-5
ISBN-10: 0-241-95266-2
Penguin · 2011