APA citiranje

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

Trích dẫn kiểu Chicago

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

MLA citiranje

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

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