Mass Market Paperback
details (United Kingdom).(see also: Audible Audiobook · Audio CD)
details (USA).(see also: Audible Audiobook · Audible Audiobook)
details (Germany).(see also: Audible Hörbuch)
details (Canada).(see also: Audible Audiobook)
ISBN: 978-0-14-003835-4
ISBN-10: 0-14-003835-3
Penguin · 1974