Paperback
details (UK).(see also: eBook (Kindle) · Audible Audiobook)
details (United States).(see also: eBook (Kindle) · Audible Audiobook)
details (Germany).(see also: Kindle Ausgabe · Audible Hörbuch)
details (Canada).(see also: eBook (Kindle) · Audible Audiobook)
ISBN: 978-0-86304-045-0
ISBN-10: 0-86304-045-4
Octagon Press Ltd · 1989