E-resources include databases, websites, e-journals, and e-books that are accessed through OneSearch, the A-Z Databases List, Research Guides, etc.
For SDSU book holdings check OneSearch. OneSearch is the online tool used for finding books, journal articles, and multimedia. You can also search all CSU library holdings and request books that we don't own.
For items outside the CSU, try Circuit (San Diego libraries) or place a request thru Interlibrary Loan. You can check WorldCat to see what's owned by libraries around the world.