Hardcover
details (USA).(see also: Audible Audiobook · eBook (Kindle))
details (UK).(see also: Audible Audiobook · eBook (Kindle))
details (Germany).(see also: Kindle Ausgabe)
details (Canada).(see also: eBook (Kindle) · Audible Audiobook)
ISBN: 978-0-03-020656-6
ISBN-10: 0-03-020656-1
Henry Holt & Co · 1977