Ordering ISBN/UPC
ISBN stands for International Standard Book Number and are issued by Bowker
If a project is a book then an ISBN is definitely desirable. However, if the work is to be licensed then the licensee typically provides their own ISBN. Although CD's and DVD's can be registered for an ISBN, the UPC is currently used more in common sales practice.
UPC (Universal Product Code) barcodes can be obtained from Creative Works after submitting a Marketing Info form.