| Paperback details (UK).(see also: eBook (Kindle) · Audible Audiobook · Audio CD)
 details (United States).(see also: Audio Cassette · eBook (Kindle) · Audio CD)
 details (Germany).(see also: Kindle Ausgabe · Kindle Ausgabe · Audible Hörbuch)
 details (Canada).(see also: eBook (Kindle) · Audio CD · Audible Audiobook)
 ISBN:  978-0-7474-0102-5 ISBN-10: 0-7474-0102-0 Orbit · 1989 |