APA (7th ed.) Citation

Guffey, M. E., Seefer, C. M., & Guffey, M. E. E. o. b. c. (2007). Mary Ellen Guffey's essentials of business communication. Thomson/South-Western.

Chicago Style (17th ed.) Citation

Guffey, Mary Ellen, Carolyn M. Seefer, and Marry Ellen. Essentials of business communication Guffey. Mary Ellen Guffey's Essentials of Business Communication. Mason OH: Thomson/South-Western, 2007.

MLA (9th ed.) Citation

Guffey, Mary Ellen, et al. Mary Ellen Guffey's Essentials of Business Communication. Thomson/South-Western, 2007.