Jo Robinson of Lit World Interview published an interesting, informative and very useful post about ISBN numbers. Thank you for your great guidance, Jo!
Your book’s ISBN (International Standard Book Number) is the 10 or 13 digit number assigned to every published book, and identifies things like edition, publisher and physical properties. Each particular edition of any published book has to have its own unique number, so you can’t use the same number if you choose to republish an already published book. The new book must have its own new number. I have seen writers on various forums claim that they’ve used the same ISBN number for both their paperback and their eBook versions, but if they did indeed get away with that they shouldn’t have. A quick squiz at Bowker’s rules (internationally applicable) will show quite clearly that a separate ISBN number is required for each format as well. eBook, audiobook, paperback and hardback. Getting even more picky, you could have MOBI and ePub versions published on different platforms. You could end up…
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