APA (7th ed.) Zitazioa
Ferrell, O., Ferrell, L., & Hirt, G. A. (2009). Business: A changing world (7th ed.). McGraw-Hill.
Chicago Style (17th ed.) Zitazioa
Ferrell, O.C, Linda Ferrell, eta Geoffrey A. Hirt. Business: A Changing World. 7th ed. Boston: McGraw-Hill, 2009.
MLA (9th ed.) Zitazioa
Ferrell, O.C, et al. Business: A Changing World. 7th ed. McGraw-Hill, 2009.
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