Cita APA (7th ed.)
Ball, D. A., & McCullogh, W. H. (1996). International business: The challenge of global competition (6th ed.). Irwin; Irwin Mcgraw hill.
Cita Chicago (17th ed.)
Ball, Donald A., i Wendell H. McCullogh. International Business: The Challenge of Global Competition. 6th ed. Chicago : Illinois dubuque: Irwin; Irwin Mcgraw hill, 1996.
Cita MLA (9th ed.)
Ball, Donald A., i Wendell H. McCullogh. International Business: The Challenge of Global Competition. 6th ed. Irwin; Irwin Mcgraw hill, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.