Link directly to books by ISBN. The ISBN is unique to a specific edition of a book — for example, the hardcover edition of a title has a different ISBN than the paperback edition. By using this method, the link generated will always default to the product page of the lowest priced copy we have in stock for that ISBN. Also, other available copies matching the title are listed on the right side of the product page.To link to DVDs, just enter the UPC code instead of an ISBN.
