Mass Market Paperback
details (UK).(see also: Audible Audiobook · eBook (Kindle))
details (USA).(see also: Audible Audiobook · eBook (Kindle))
details (Germany).(see also: Audible Hörbuch · Audible Hörbuch · Kindle Ausgabe)
details (Canada).(see also: eBook (Kindle) · Audible Audiobook)
ISBN: 978-0-373-72034-7
ISBN-10: 0-373-72034-3
Laser · 1976