Ball, D. A. (1990). Instructor's manual to accompany international business (4th ed.). Homewood.
Čikaški stil citiranja (17. izdanje)Ball, Donald A. Instructor's Manual to Accompany International Business. 4th ed. Boston: Homewood, 1990.
MLA način citiranja (9. izdanje)Ball, Donald A. Instructor's Manual to Accompany International Business. 4th ed. Homewood, 1990.
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