Professor’s Choice generates a unique “item number” for each of your custom-developed books. Professor’s Choice books have no ISBN number. Upon completing your Professor’s Choice book, you will receive an e-mail confirmation that provides you all the specific details your representative or bookstore will need to place an order for student copies. When ordering student copies, simply provide the title of the book, your name as the compiler, and the unique item number provided to you from Professor’s Choice. Provide your school representative or bookstore with the expected course enrollment and your customized texts will be printed from our Print-On-Demand center and shipped directly to the school or organization. As custom product, no returns are accepted.