ISBN

• An ISBN (International Standard Book Number) is a 13-digit unique identifier assigned to every edition and variation of a book that is published. The ISBN allows bookstores, libraries, and distributors to track, sell, and catalog books efficiently.

Each ISBN corresponds to a specific version of a book, meaning a paperback and an e-book version of the same title will have different ISBNs. Having an ISBN is essential for distribution and is often required by retailers and libraries.