How can I list a book in giveaways if it doesn't have an ISBN?

[Hafhaf]

Please, could anyone tell me what to do? I'm adding a book to giveaways but it doesn't have any ISBN. How can I list it in giveaways? Thanks

[Paula]

You cannot, you need to contact GR Support using the link below

https://www.goodreads.com/about/conta...