When going to an interview you should be prepared to bring the following items with you.
1. Notepad and pen or pencil (if appropriate)
2. Copies of your resume in the event the interviewer (s) have not been given a copy
3. A minimum of three references consisting of 2 managers if possible, a peer and a subordinate. The references should be professional references and not personal. You should have the names, current company, title and contact information.
Being prepared is an indicator of your professionalism.