Cita APA (7th ed.)

Dumont, R. A. (1987). Business communications workbook. Little, Brown.

Cita Chicago (17th ed.)

Dumont, Raymond A. Business Communications Workbook. Boston: Little, Brown, 1987.

Cita MLA (9th ed.)

Dumont, Raymond A. Business Communications Workbook. Little, Brown, 1987.