During the interview process, employers want to connect with folks who know you in different ways. Student, employee and team member/co-worker are the most common frames of reference, so be sure to include at least one employer and one faculty member on your list of references. (Avoid featuring personal friends and family members -- who are less objective -- as references.)
Provide the names of at least three people -- no more than five -- and be sure to note their connection to you, e.g. teacher, supervisor, colleague. List an email address and work phone number for each reference, too.
Finally, and most importantly, notify your references of your job search. Provide them a current copy of your resume as well as a description of the job you’re applying for and the name of the person who may be contacting them. They’ll be better able to offer an endorsement if they’re prepared for the call!