APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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