Não informado. (1987). National Business Education Yearbook. National Business Education Association.
Cita Chicago Style (17a ed.)Não informado. National Business Education Yearbook. Reston, Va: National Business Education Association, 1987.
Cita MLA (8a ed.)Não informado. National Business Education Yearbook. National Business Education Association, 1987.
Precaución: Estas citas no son 100% exactas.