Have a typed copy of your references. Minimum of 3. These must be professional references. Not your Aunt Sally who has always thought you have the most adorable dimples!
Provide names, position, company and phone number of each reference.
The less work you make your interviewer do in squeezing this information out of you as you nervously fumble through scraps of paper, matchbook covers, cocktail napkins, etc., just might have a bearing on your candidacy.
Don't forget to inform your references that you are using their names as references and prepare them for phone calls verifying employment.