Since the Music Reference Collection is pretty small, most people just browse the shelves.
But suppose you've searched the catalog for "women composers." You checked the box for "Books" in the Format toolbar. But how do you know if the book you've found is a Reference book, or a book you can check out?
Click on the title of the book in the list of results.
Under "Find a copy in the library," look for the Call number. If the number starts with REF that means it's a reference book. You will find it in the Reference Collection on the first floor. Remember, you can't check it out, but you can make copies of the pages you need.