Study Guide Refund. Because we are constantly updating and revising our materials, we cannot offer refunds on study guides. Textbooks You may obtain textbooks from any source you choose, but many students find it convenient to order from our textbook supplier, Specialty Books. Be sure that you purchase the correct edition, as other editions may be substantially different from the one that is in current use. Order online from their Web site .
International orders require payment by credit card only.
Please do not send cash. Textbooks in stock will be shipped within 24 hours after an order is received. Books are shipped to U.S. addresses by UPS, except for those directed to a post office box, which are shipped by U.S. mail. International orders will be shipped by DHL Worldwide Express. Shipping costs are added to your credit card purchase.