What is an ISBN?
ISBN (International Standard Book Number) is a 10- or 13-digit number used for identification.
An ISBN is unique to every book, so it is the best way to find the exact edition
of the book you wish to sell.
Where is the ISBN?
The ISBN is always found on the back cover, near the bar code. It will also be listed
inside the book, on the same page as the copyright and publisher information. It
is always labeled ISBN (e.g. ISBN 0-00-470779-6).
How to search by ISBN
To search by ISBN, simply type the 10 or 13 digits into the search box. Do not include
the dashes.
If you would like to search multiple ISBN numbers, enter them into the box separating each by a comma or return. You may search up
to 15 ISBN numbers per search query.