One Book, Multiple ISBNsIn order to

One Book, Multiple ISBNsIn order to ensure that you are making your book accessible to all of your potential readers, you may want to provide different format choices for your book. Multiple book formats and editions will each require a unique ISBN. For example, a softcover edition requires a different ISBN than a hardcover edition. Or if you decide to have both a printed book format and an eBook format, each format will need its own ISBN.Buying an ISBNISBNs are issued to publishers, who then assign them to individual books. Because a self-published author is considered a publisher, you can purchase an ISBN for your own book. BookBaby makes buying an ISBN easy and affordable. One of the many benefits of self-publishing your book with BookBaby, is the ability to buy a single ISBN at the rate of $39 (each) while you’re in the process of making your book.You also can purchase an ISBN directly from Bowker at myidentifiers.com. Keep in mind that a single ISBN from Bowker costs $125, and 10 ISBNs cost $250. There’s no difference between an ISBN purchased from BookBaby vs one from Bowker. BookBaby purchases blocks of ISBNs from Bowker to provide to our authors.Where does a book ISBN go?An ISBN goes on the copyright page and should be included in the Cataloging in Publication (aka CIP data) block, if you use one. ISBN numbers are also usually printed on the back covers of books as part of the bar code when the book is being sold.