Business English for the 80's. (1980). Business English for the 80's. New Jersey: Prentice-Hall.
Trích dẫn kiểu ChicagoBusiness English for the 80's. Business English for the 80's. New Jersey: Prentice-Hall, 1980.
MLA CitationBusiness English for the 80's. Business English for the 80's. New Jersey: Prentice-Hall, 1980.
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