Brieger, N., & Comfort, J. (1994). Advanced business contacts. New York: Phoenix ELT.
Trích dẫn kiểu ChicagoBrieger, Nick., và Jeremy Comfort. Advanced Business Contacts. New York: Phoenix ELT, 1994.
MLA CitationBrieger, Nick., và Jeremy Comfort. Advanced Business Contacts. New York: Phoenix ELT, 1994.
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