Mass Market Paperback
details (USA).(see also: eBook (Kindle) · Audible Audiobook)
details (UK).(see also: eBook (Kindle) · Audible Audiobook)
details (Germany).(see also: Kindle Ausgabe · Audible Hörbuch)
details (Canada).(see also: eBook (Kindle))
ISBN: 978-0-671-64946-3
ISBN-10: 0-671-64946-9
Pocket · 1989