What should we put in URL for application of DOI for physical book

We are going to publish a physical book
And before we finalize the book for publication, we need to obtain the DOI such that we can put it into the book.
I just try doing the submission, and I was told that I must provide the URL.
I got an msg saying: “If book DOI is provided, BOOK url must be supplied also.”
I try to omit both DOI and URL, and I was told both are mandatory field.
May I know what kind of URL I need to provide?
What we are going to publish is a physical book and has nothing to do with any URL. May I ask what information CrossRef wish to look for in the URL?
Zavier Chan

Hi Zavier,

Thanks for your message.

Broadly speaking, to register a DOI for a book on the web deposit form, use the following steps:

  1. Select the Book data type
  2. Enter the Book-level on the first page of the form. At minimum this includes Book type, title, DOI, URL, Publisher, ISBN, and at least one (print or online) publication year
  3. Select ‘Add Chapters’
  4. On the second page of the form, enter the metadata for your first chapter (chapter title, authors, page numbers if available), the chapter DOI URL
  5. Click ‘Add Another Chapter’
  6. Continue to enter article metadata, DOIs, and URLs until you’ve entered all chapters for the given book.
  7. Click ‘Finish’
  8. Enter your username and password and click Login
  9. Enter your email address and click ‘Deposit’


  • If you don’t want to register a separate DOI for each book chapter, you can skip steps 3 through 6.

  • Please note that the Book URL refers to the landing page where the book is published online.

We also have a web deposit form video tutorial and full instructions for using the web deposit form in our documentation.



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