APA (7th ed.) Zitazioa
Ball, D. A., & McCulloch, W. H. (1989). International business: Introduction and essentials (3rd ed.). Irwin.
Chicago Style (17th ed.) Zitazioa
Ball, Donald A., eta Wendell H. McCulloch. International Business: Introduction and Essentials. 3rd ed. Homewood, Illinois: Irwin, 1989.
MLA (9th ed.) Zitazioa
Ball, Donald A., eta Wendell H. McCulloch. International Business: Introduction and Essentials. 3rd ed. Irwin, 1989.
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