Ball, D. A. (2008). International business: The challenge of global competition. New York: The McGraw-Hill Companies.
Styl ChicagoBall, Donald A. International Business: The Challenge of Global Competition. New York: The McGraw-Hill Companies, 2008.
Citace podle MLABall, Donald A. International Business: The Challenge of Global Competition. New York: The McGraw-Hill Companies, 2008.
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