APA (7th ed.) Zitazioa
Ball, D. A. [. (2002). International business: The challenge of global competition (8th ed.). McGraw-Hill/Irwin.
Chicago Style (17th ed.) Zitazioa
Ball, Donald A. [et-al]. International Business: The Challenge of Global Competition. 8th ed. Boston: McGraw-Hill/Irwin, 2002.
MLA (9th ed.) Zitazioa
Ball, Donald A. [et-al]. International Business: The Challenge of Global Competition. 8th ed. McGraw-Hill/Irwin, 2002.
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