Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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