Ball, D. A. (2012). International Business: The Challenge of Global Competition. McGraw-Hill Education.
Παραπομπή Chicago StyleBall, Don. A. International Business: The Challenge of Global Competition. McGraw-Hill Education, 2012.
Παραπομπή MLABall, Don. A. International Business: The Challenge of Global Competition. McGraw-Hill Education, 2012.
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