Madura, J. (2007). Introduction to business (4th ed.). South-Western.
Citazione stile Chigago Style (17a edizione)Madura, Jeff. Introduction to Business. 4th ed. Eagan, MN ; Mason,OH: South-Western, 2007.
Citatione MLA (8a ed.)Madura, Jeff. Introduction to Business. 4th ed. South-Western, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.