APA Citation

Mary Ellen Guffey. (2004). Essentials of: Business communications. Thomsom South-Western.

Trích dẫn kiểu Chicago

Mary Ellen Guffey. Essentials Of: Business Communications. Thomsom South-Western, 2004.

MLA Citation

Mary Ellen Guffey. Essentials Of: Business Communications. Thomsom South-Western, 2004.

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