Cita APA (7th ed.)

Guffey, M. E. (2006). Business communication: Process & product (5th ed.). Thomson/South-Western.

Cita Chicago (17th ed.)

Guffey, Mary Ellen. Business Communication: Process & Product. 5th ed. Mason, OH: Thomson/South-Western, 2006.

Cita MLA (9th ed.)

Guffey, Mary Ellen. Business Communication: Process & Product. 5th ed. Thomson/South-Western, 2006.