If you are receiving a message that you must access your e-book via a third-party vendor (e.g., Vitalsource, Kortext, etc.), you should visit the site where you purchased access to the book. If you purchased the book through your bookstore, this will likely be a My Course Materials page or virtual bookshelf via the bookstore website or within your LMS. If you purchased the book directly via a third-party, this will likely be on the vendor’s website.