You can purchase the books through Amazon and Barnes & Noble
| AMAZON U.S www.amazon.com |
AMAZON UK www.amazon.com.co.uk |
AMAZON GERMANY www.amazon.de |
AMAZON FRANCE www.amazon.fr |
AMAZON SPAIN www.amazon.es |
| AMAZON CHINA | AMAZON ITALY www.amazon.it |
AMAZON JAPAN www.amazon.co.jr |
AMAZON CANADA www.amazon.ca |
BARNES & NOBLE www.barnesandnoble.com |