APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.