APA (7e ed.) Bronvermelding

Ball, D. A., & McCulloch, H. W. (1993). International business: Introduction and essentials (5th ed.). Irwin.

Chicago (17e ed.) Bronvermelding

Ball, Donald A., en H. Wendell McCulloch. International Business: Introduction and Essentials. 5th ed. Burr Ridge, Ill: Irwin, 1993.

MLA (9e ed.) Bronvermelding

Ball, Donald A., en H. Wendell McCulloch. International Business: Introduction and Essentials. 5th ed. Irwin, 1993.