Paperback
details (United Kingdom).(see also: Audible Audiobook · eBook (Kindle))
details (USA).(see also: Audible Audiobook)
details (Germany).(see also: Audible Hörbuch · Kindle Ausgabe)
details (France).(see also: livre numérique format Kindle · Livres audio Audible)
ISBN: 978-0-14-030206-6
ISBN-10: 0-14-030206-9
Puffin Books · 1974