If the library doesn't own something, you may ask us to get it from another library. See the Interlibrary Loan page for details on requesting books, articles and more from other libraries via their ILLiad system.
You can search for items to order from ILL using the library web page or Worldcat. Look for links such as "Request from another Library," "Request item/scan via Interlibrary Loan," "Request scan via Interlibrary Loan" or "Request item through Interlibrary Loan." Any of these links will get you to a form for placing a request.
