Nickels, W. G. (2010). Understanding Business (9th.). McGraw Hill.
Chicago-čujuhus (17. p.)Nickels, William G. Understanding Business. 9th. New Delhi: McGraw Hill, 2010.
MLA-čujuhus (9. p.)Nickels, William G. Understanding Business. 9th. McGraw Hill, 2010.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.