Due to temporary office closures, ISBN orders submitted by fax or mail will be delayed. For immediate service, please purchase your ISBNs through this website. Our staff members continue to work remotely and are available to serve you by email and phone. Thank you.
Bowker Identifier Services has ISBNs and more to help authors publish, market, and sell their books
Register and Copyright your Book
Bowker has the resources you need to safeguard your content and boost discoverability
ISBNs help books get discovered!
Purchasing an ISBN is a big step toward ensuring your book’s commercial success.
CopyrightsNow app makes it easy to register your copyright
— and protect your work for life, plus 70 years!
Find more ways to get your book discovered
Publish your Book
We have products, services, and resources to help authors through the publishing process
Self-Publish Solutions
Market your Book
You’ll find tools to help you reach new readers at Bowker
Create your own website in minutes — no technical skill required!
Build your own author website with Author Home Page. You can do it yourself because we’ve done most of the hard work for you! We supply templates, images, and color palettes you can select and personalize to build a website that will attract and engage the readers you want to reach.
We have more tools that will help you reach more readers SEE MORE TOOLS