Paperback
details (United Kingdom).(see also: Audible Audiobook)
details (USA).(see also: Audible Audiobook · Audible Audiobook)
details (Germany).(see also: Audible Hörbuch)
details (Canada).(see also: Leather Bound)
ISBN: 978-0-586-02438-6
ISBN-10: 0-586-02438-7
HarperCollins Distribution Services · 1968