Paperback
details (United Kingdom).(see also: eBook (Kindle) · Audible Audiobook · Audio Cassette)
details (USA).(see also: eBook (Kindle) · Audible Audiobook · Audio Cassette)
details (Germany).(see also: Kindle Ausgabe · Kindle Ausgabe · Audible Hörbuch)
details (Canada).(see also: eBook (Kindle) · Audio Cassette · Audible Audiobook)
ISBN: 978-0-7515-0231-2
ISBN-10: 0-7515-0231-6
Sphere · 1989