In order to make your work more marketable, you might want to consider the following options: ISBN/Barcode (International Standard Book Number): It is a 13-digit number that uniquely identifies books published internationally. The purpose of the ISBN is to establish and identify one title or edition of a title from one specific publisher and is unique to that edition, allowing for more efficient marketing of products by booksellers, libraries, universities, wholesalers and distributors. If you want to sell your book through retailers, distributors or libraries, you will need an ISBN and barcode. You can apply for and purchase your own ISBN, listing you as the publisher, by going to www.isbn.org. Then click on Order ISBNs, English Forms. You will then be able to apply for a single ISBN and barcode. It will cost $125 for a single ISBN and $25 for a barcode. This will take about two weeks. Once you receive your ISBN you will need to go to www.bowkerlink.com to register your book title in Books in Print.