APA (7th ed.) Zitazioa

Ball, D. A. (1990). Instructor's manual to accompany international business (4th ed.). Homewood.

Chicago Style (17th ed.) Zitazioa

Ball, Donald A. Instructor's Manual to Accompany International Business. 4th ed. Boston: Homewood, 1990.

MLA (9th ed.) Zitazioa

Ball, Donald A. Instructor's Manual to Accompany International Business. 4th ed. Homewood, 1990.