If there’s no PDF or HTML full-text link, a particular database you can use the GET IT @ OU Libraries link. This will connect you to the full-text
If OU Libraries doesn't have access to the item you are looking for you can request it through InterLibrary Loan (ILL).
This is a free service, if you haven't used ILL before you will first need to register as a new user.
Visit the ILL help guide or ASK A LIBRARIAN