Paperback
details (UK).(see also: eBook (Kindle) · Audio CD · CD-ROM)
details (USA).(see also: Audible Audiobook · CD-ROM · eBook (Kindle))
details (Germany).(see also: Kindle Ausgabe · CD-ROM · Audible Hörbuch)
details (Canada).(see also: eBook (Kindle) · Audio CD · Audible Audiobook)
ISBN: 978-0-14-005035-6
ISBN-10: 0-14-005035-3
Penguin · 1979