An International Standard Book Number (ISBN) is a 10 or 13-digit number that is a unique identifier for a book. If you have a copy of the publication, you can find the ISBN on the back cover (usually next to the barcode) or on the ‘copyright’ page.
If you don’t have the publication with you, you can use catalogue services such as National Library of Australia’s Trove website to find the ISBN.
Required format for ISBNs
We need ISBNs to be in 13-digit or 10-digit format. We'll accept dashes or hyphens as we know these are common, but we can't accept special characters or spaces.