Paperback
details (USA).(see also: eBook (Kindle) · MP3 CD · eBook (Kindle))
details (UK).(see also: MP3 CD · eBook (Kindle))
details (Germany).(see also: MP3 CD · Kindle Ausgabe)
details (Canada).(see also: eBook (Kindle) · MP3 CD · eBook (Kindle))
ISBN: 978-1-890517-16-8
ISBN-10: 1-890517-16-X
Core Knowledge Foundation · 2000