Cita APA (7a ed.)
Guffey, M. E. (1991). Essentials of business communication. Mason, OH.
Cita Chicago Style (17a ed.)
Guffey, Mary E. Essentials of Business Communication. London: Mason, OH, 1991.
Cita MLA (9a ed.)
Guffey, Mary E. Essentials of Business Communication. Mason, OH, 1991.
Precaución: Estas citas no son 100% exactas.