Paperback
details (UK).(see also: Audible Audiobook)
details (USA).(see also: Audible Audiobook · eBook (Kindle))
details (Germany).(see also: Audible Hörbuch)
details (Canada).(see also: Audible Audiobook)
ISBN: 978-0-00-612181-7
ISBN-10: 0-00-612181-0
HarperCollins Distribution Services · 1970