I chose to use EndNote. EndNote has the capability of retrieving data back to a library. In the library window it displays headings for groups, trash, and online search. Under the Group heading create custom subsections to store references in. However, EndNote has a limit of 500 specific groups per library. Also a reference can only be added to a library once, to eliminate duplication of references in a library. Although, a particular reference can be added to as many libraries as you wish. If you accidently delete a reference it is not completely deleted from EndNote, it can be retrieved from the trash if necessary. EndNote also will manage your resources in several different formats such as MLA, APA ect. This allows for ease in using for works cited. Once you have stored a reference into EndNote it is stored and available for use when needed.