Paperback
details (UK).(see also: Audible Audiobook)
details (United States).(see also: Audible Audiobook · eBook (Kindle))
details (Germany).(see also: Audible Hörbuch)
details (Canada).(see also: eBook (Kindle) · Audible Audiobook)
ISBN: 978-0-14-004835-3
ISBN-10: 0-14-004835-9
Viking Press · 1978