During your job search, a prospective employer may request a list of references prior to or during an interview. This request may take the form of a response to a written job application, a question on a company application or as an addendum to your resume.
The purpose of a reference sheet is to have a list of people who can verify and elaborate on your professional experience for a potential employer. Past employers, professors, and advisors are the best professional references to have. It is important to have a reference sheet because potential employers will often ask for a list of references they can contact.
Make sure to include people who know what type of person you are and who are familiar with your work. It is important to select individuals who know your distinctiveness so that they can provide a positive and accurate description of you to the employer or company in which you are seeking employment.