Paperback
details (United States).(see also: Audio Cassette · eBook (Kindle))
details (United Kingdom).(see also: Audio Cassette · eBook (Kindle))
details (Germany).(see also: Kindle Ausgabe)
details (Canada).(see also: Audio Cassette · eBook (Kindle))
ISBN: 978-0-671-66581-4
ISBN-10: 0-671-66581-2
Pocket · 1991