Gibson, R., & Robert Gibson. (2002). International business communication. New York, NY: HarperCollins.
Trích dẫn kiểu ChicagoGibson, Robert, và Robert Gibson. International Business Communication. New York, NY: HarperCollins, 2002.
MLA citiranjeGibson, Robert, và Robert Gibson. International Business Communication. New York, NY: HarperCollins, 2002.
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