Nickels, W. G., & McHugh, J. M. (1987). Understanding business (4th ed.). IRWIN.
Chicago-čujuhus (17. p.)Nickels, William G., juo James M. McHugh. Understanding Business. 4th ed. Chicago: IRWIN, 1987.
MLA-čujuhus (9. p.)Nickels, William G., juo James M. McHugh. Understanding Business. 4th ed. IRWIN, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.