Paperback
details (UK).(see also: CD-ROM · Audio CD · Audio CD)
details (USA).(see also: eBook (Kindle) · Audio CD · Audio CD)
details (Germany).(see also: Audible Hörbuch · Audio CD · Audio CD)
details (Canada).(see also: Audio CD · Audible Audiobook · Audible Audiobook)
ISBN: 978-0-14-002569-9
ISBN-10: 0-14-002569-3
Penguin · 1973