Mass Market Paperback
details (USA).(see also: Audible Audiobook · eBook (Kindle))
details (UK).(see also: Audible Audiobook · eBook (Kindle))
details (Germany).(see also: Audible Hörbuch · Kindle Ausgabe)
details (Canada).(see also: Audible Audiobook · eBook (Kindle))
ISBN: 978-0-441-18120-9
ISBN-10: 0-441-18120-1
Ace Books · 1978