Hardcover
details (UK).(see also: eBook (Kindle) · Audible Audiobook)
details (USA).(see also: eBook (Kindle) · Audible Audiobook)
details (Germany).(see also: Kindle Ausgabe · Audible Hörbuch)
details (Canada).(see also: eBook (Kindle) · Audible Audiobook)
ISBN: 978-0-435-12038-2
ISBN-10: 0-435-12038-7
Heinemann Educational Publishers · 1958