Textbook requirements can change at any time. All authors, titles, ISBNs, editions, subjects, classes, sections, CRNs, instructors, and prices are subject to change. The listing of a used price does not guarantee availability of a used book; inventory is not reflected on this website or in our course materials list. The notation 0.00 in a price field indicates that a price has not yet been assigned to that item. The price will be posted to the web site as soon as it is assigned. We are not responsible for information used on this site for the purchase of materials from other locations. We can only offer refunds for books purchased from our store.