Mass Market Paperback
details (USA).(see also: eBook (Kindle) · Audible Audiobook)
details (United Kingdom).(see also: eBook (Kindle) · Audible Audiobook · eBook (Kindle))
details (Germany).(see also: Audible Hörbuch · Kindle Ausgabe)
details (Canada).(see also: eBook (Kindle) · Audible Audiobook)
ISBN: 978-0-345-29009-0
ISBN-10: 0-345-29009-7
Ballantine Books · 1980