Educational Foundation (National Restaurant Association). (1992). Handling complaints [videorecording]. Educational Foundation, National Restaurant Association.
Cita Chicago (17th ed.)Educational Foundation (National Restaurant Association). Handling Complaints [videorecording]. Chicago, Ill: Educational Foundation, National Restaurant Association, 1992.
Cita MLA (9th ed.)Educational Foundation (National Restaurant Association). Handling Complaints [videorecording]. Educational Foundation, National Restaurant Association, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.