Frerrell, O. C. (1990). Study guide: Business a changing world. Chicago: Irwin.
Trích dẫn kiểu ChicagoFrerrell, O. C. Study Guide: Business a Changing World. Chicago: Irwin, 1990.
MLA CitationFrerrell, O. C. Study Guide: Business a Changing World. Chicago: Irwin, 1990.
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