You can also get a bar code from the agency that supplied you the ISBN.
ISBNs are not necessary to sell ebooks; none of the top online retailers require them.
Printed books, however, cannot be sold without an ISBN.
Remember that each version of your book would need a separate ISBN, and purchasing a block of 10 would be more cost-effective than purchasing one.
This is a preferred practice for reasons explained later in this article.
If you are going down the traditional publishing route, your publisher will be your book’s publisher of record.
The ISBN helps customers identify and order the exact book they want to purchase.
Libraries, bookstores, online retailers, distributors, and wholesalers depend on this unique identifier to track purchases and sales, and it will be necessary to apply for an ISBN if you intend to sell to them.
more Book reading is an important factor contributing to children's cognitive development and education for sustainable development.
However, in a developing country like Vietnam, statistics have reported a low figure in book reading: only 1.2 books a year.