Cita APA

Guffey, M. E., & Seefer, C. M. (2007). Essentials of business communication. Mason: Thomson/South-Western.

Chicago Style Citation

Guffey, Mary Ellen, i Carolyn M. Seefer. Essentials of Business Communication. Mason: Thomson/South-Western, 2007.

Cita MLA

Guffey, Mary Ellen, i Carolyn M. Seefer. Essentials of Business Communication. Mason: Thomson/South-Western, 2007.

Atenció: Aquestes cites poden no estar 100% correctes.