From the Center for History and New Media at George Mason University, this is a Firefox plugin that helps you manage your citations.

Keep track of Web pages you've looked at--organize them yourself with tags.

A tool to help manage your many, many tasks.

Upon request, Kenyon’s ILL staff makes every attempt to locate and obtain resources not owned by Kenyon, another CONSORT library, or OhioLINK library. Items may include books, journal and newspaper articles, dissertations, microfilmed materials, and other circulating documents.

Detailed directions with examples on citing a variety of music sources using Chicago Turabian