/b/ask-keith/posts/do-i-need-to-purchase-an-isbn-for-my-book-where-is-the-best-place-to-buy-oneQuestion: Do I need to purchase an ISBN for my book? Where is the best place to buy one? Answer: An ISBN, or International Standard Book Number, is a unique, 13-digit numerical identifier assigned to a particular edition or format of a book. I...en-USTelligent Community 10