Cita APA (7th ed.)

Ball, D. A., & McCulloch, W. H. (1999). International business: The challenge of global competition (7th ed.). Irwin/McGraw-Hill.

Cita Chicago (17th ed.)

Ball, Donald A., i Wendell H. McCulloch. International Business: The Challenge of Global Competition. 7th ed. Boston: Irwin/McGraw-Hill, 1999.

Cita MLA (9th ed.)

Ball, Donald A., i Wendell H. McCulloch. International Business: The Challenge of Global Competition. 7th ed. Irwin/McGraw-Hill, 1999.