As the U.S. ISBN Agency, Bowker is the ONLY official source of ISBNs in the United States. ISBNs provide unique identification for books and simplify the distribution of your books throughout the global supply chain.
Once you set up your account with us, your ISBNs will be added to your account immediately at purchase (Title Assignment Instructions). You will be recognized as the publisher of all book titles associated with those ISBNs.
Bowker is the official source for ISBNs in the United States. An ISBN uniquely identifies your book, and facilitates the sale of your book to bookstores (physical and digital) and libraries.
Here are the tools self-publishers need at a discount price, featuring ISBNs, barcodes, ebook publishing, and more. Get the high-quality services your book deserves. We provide solutions for ebook projects of all sizes and complexities.
As an authorized agent for Bowker, the US ISBN Agency, we’re able to offer our Custom ISBN package: the best and lowest-cost alternative for ISBNpurchasing and registration.
Whether you’re a self-publishing author or general trade publisher maintaining a backlist of thousands, Bowker offers critical resources to satisfy your needs, including ISBNs, barcodes, and business intelligence.
Since our original partnership with Bowker in 2004, Publisher Services is the largest authorized agent to provide ISBNs and barcodes to self-publishers. Our clients have complete control over the information they wish to publish to the Global Books in Print Database.
ISBNs from THORPE-Bowker make your book easier to discover. Click here to buy your ISBN from the official source of ISBNs for Australian publishers and self-publishers.
For authors publishing within the United States, Bowker is the definitive and official source. When you ask where to buy an ISBN, this is the primary answer for direct ownership. Purchasing from its platform, MyIdentifiers.com, registers you or your publishing entity as the "publisher of record."
ISBNs from THORPE-Bowker make your book easier to discover. Click here to buy your ISBN from the official source of ISBNs for Australian publishers and self-publishers.