Cita APA (7a ed.)

Ball, D. A., & McCulloch, W. H. (1991). International business: The challenge of global competition (7th ed.). McGraw-Hill/Irwin.

Cita Chicago Style (17a ed.)

Ball, Donald A., y Wendell H. McCulloch. International Business: The Challenge of Global Competition. 7th ed. Boston: McGraw-Hill/Irwin, 1991.

Cita MLA (9a ed.)

Ball, Donald A., y Wendell H. McCulloch. International Business: The Challenge of Global Competition. 7th ed. McGraw-Hill/Irwin, 1991.