APA (7th ed.) Zitazioa
Ball, D. A., & McCullogh, W. H. (1996). International business: The challenge of global competition (6th ed.). Irwin.
Chicago Style (17th ed.) Zitazioa
Ball, Donald A., eta Wendell H. McCullogh. International Business: The Challenge of Global Competition. 6th ed. Chicago: Irwin, 1996.
MLA (9th ed.) Zitazioa
Ball, Donald A., eta Wendell H. McCullogh. International Business: The Challenge of Global Competition. 6th ed. Irwin, 1996.
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