Madura, J. (2007). Introduction to Business.: 4th ed (4th ed.). Thomson South-Western.
Chicago Style (17th ed.) ZitazioaMadura, Jeff. Introduction to Business.: 4th Ed. 4th ed. Canada: Thomson South-Western, 2007.
MLA (9th ed.) ZitazioaMadura, Jeff. Introduction to Business.: 4th Ed. 4th ed. Thomson South-Western, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.