Some employers request that an applicant submit letters of reference with the application. However, more typically, the employer will ask for a list of references, some of whom will be contacted by telephone. Consequently, the applicant must supply accurate information about how to contact each reference. The reference list, tailored to the particular job being sought, may be appended to the résumé accompanying the application letter or provided at the interview. It is helpful to categorize and annotate the references. For example, a professional reference may be annotated as follows: