Paperback
details (UK).(see also: Audible Audiobook · eBook (Kindle))
details (USA).(see also: Audible Audiobook · eBook (Kindle))
details (Germany).(see also: Kindle Ausgabe · Audible Hörbuch)
details (Canada).(see also: eBook (Kindle) · Audible Audiobook)
ISBN: 978-0-09-999230-1
ISBN-10: 0-09-999230-2
Ballantine Books Inc. · 1991