Ball, D. A. (1990). Instructor's manual to accompany international business (4th ed.). Homewood.
芝加哥风格引文Ball, Donald A. Instructor's Manual to Accompany International Business. 4th ed. Boston: Homewood, 1990.
MLA引文Ball, Donald A. Instructor's Manual to Accompany International Business. 4th ed. Homewood, 1990.
警告：这些引文格式不一定是100％准确.