Guffey, M. E., & Mary Ellen Guffey; Carolyn M. Seefer. Business English. Mason, Ohio: Thomson/South-Western.
Trích dẫn kiểu ChicagoGuffey, Mary Ellen, và Mary Ellen Guffey; Carolyn M. Seefer. Business English. Mason, Ohio: Thomson/South-Western.
MLA citiranjeGuffey, Mary Ellen, và Mary Ellen Guffey; Carolyn M. Seefer. Business English. Mason, Ohio: Thomson/South-Western.
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