Professional references are individuals that can attest to the quality of your work, your skills, and your experience. Individuals that are appropriate to serve as references include professors, advisors, college administrators, and former or current supervisors. Before listing someone as a reference, ask permission to do so. A typical reference page will include anywhere between three and five references. While it is a separate document from your resume, the formatting (i.e., font, font size, page margins, etc) should be consistent with your resume.