Nickels, W. G., McHugh, J. M., & McHugh, S. M. (2002). Understanding business (2003 media ed.). Boston: McGraw-Hill/Irwin.
Παραπομπή Chicago StyleNickels, William G., James M. McHugh, και Susan M. McHugh. Understanding Business. 2003 media ed. Boston: McGraw-Hill/Irwin, 2002.
Παραπομπή MLANickels, William G., James M. McHugh, και Susan M. McHugh. Understanding Business. 2003 media ed. Boston: McGraw-Hill/Irwin, 2002.
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