Mass Market Paperback
details (UK).(see also: eBook (Kindle) · Audible Audiobook)
details (USA).(see also: Audible Audiobook)
details (Germany).(see also: Kindle Ausgabe · Audible Hörbuch · Kindle Ausgabe)
details (Canada).(see also: eBook (Kindle) · eBook (Kindle) · eBook (Kindle) · eBook (Kindle))
ISBN: 978-0-14-000423-6
ISBN-10: 0-14-000423-8
Penguin · 1975