Ober, S. (2001). Contemporary business communication (4th edition.). Boston: Houghton Mifflin Co.
Trích dẫn kiểu ChicagoOber, Scot. Contemporary Business Communication. 4th edition. Boston: Houghton Mifflin Co, 2001.
MLA CitationOber, Scot. Contemporary Business Communication. 4th edition. Boston: Houghton Mifflin Co, 2001.
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