Access to Electronic Textbooks 

VitalSource, in collaboration with participating publishers, is providing students and faculty with complimentary access through May 25th to a wide variety of university textbooks. Simply create a free account at VitalSource (or access your existing one) and be sure to use your email address to quality. More information is available on VitalSource’s Help page.
Cengage is providing free trial access to Cengage Unlimited (which includes access to courseware and eBooks) in classes using Cengage materials—regardless if they are a current customer or not. Cengage materials can be accessed at You will need to create an account if you don’t already have an account with Cengage. Please visit the Cengage website for more information on how to access Cengage Unlimited.
Cambridge Core, the home of academic content from Cambridge University Press, is providing free access to HTML textbooks through May. Access is available through your SDSU Library account. Visit the Cambridge Core website to search for Cambridge Core textbooks.
There are other digital eBooks available to purchase. If you are not able to find the eBooks you are looking for in the options above, be sure to visit the Aztec Shops Redshelf Portal and VitalSource Portal and search by ISBN, Author, or title.
Digital ebooks that aren’t available through the above providers may be purchased online through the Aztec Shops website (click on the "Textbooks" link) or printed copies may be purchased through various third-party retailers (just be sure the selected edition is recommended by your course instructor).