Cita APA

Guffey, M. E., & Mary Ellen Guffey; Carolyn M. Seefer. Business English. Mason, Ohio: Thomson/South-Western.

Chicago Style Citation

Guffey, Mary Ellen, i Mary Ellen Guffey; Carolyn M. Seefer. Business English. Mason, Ohio: Thomson/South-Western.

Cita MLA

Guffey, Mary Ellen, i Mary Ellen Guffey; Carolyn M. Seefer. Business English. Mason, Ohio: Thomson/South-Western.

Atenció: Aquestes cites poden no estar 100% correctes.