Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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