Ferrell, O. C., Ferrell, L., & Hirt, G. A. (2014). Business: A changing world (Ninth edition.). New York: McGraw-Hill Irwin.
Παραπομπή Chicago StyleFerrell, O. C., Linda Ferrell, και Geoffrey A. Hirt. Business: A Changing World. Ninth edition. New York: McGraw-Hill Irwin, 2014.
Παραπομπή MLAFerrell, O. C., Linda Ferrell, και Geoffrey A. Hirt. Business: A Changing World. Ninth edition. New York: McGraw-Hill Irwin, 2014.
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