Παραπομπή APA
Ball, D. A. (2012). International business: The challenge of global competition (13th global ed.). New York: McGraw-Hill Irwin.
Παραπομπή Chicago StyleBall, Donald A. International Business: The Challenge of Global Competition. 13th global ed. New York: McGraw-Hill Irwin, 2012.
Παραπομπή MLABall, Donald A. International Business: The Challenge of Global Competition. 13th global ed. New York: McGraw-Hill Irwin, 2012.
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