FERRELL, O. C., & HIRT, G. (2003). Business: A changing world.-- ed.4. McGraw-Hill irwin.
Chicago-čujuhus (17. p.)FERRELL, O. C., juo Geoffrey HIRT. Business: A Changing World.-- Ed.4. Boston: McGraw-Hill irwin, 2003.
MLA-čujuhus (9. p.)FERRELL, O. C., juo Geoffrey HIRT. Business: A Changing World.-- Ed.4. McGraw-Hill irwin, 2003.
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