Muthal, M. &. o. Business Communication, 2009.
Chicago-čujuhus (17. p.)Muthal, Mamta & others. Business Communication, 2009.
MLA-čujuhus (9. p.)Muthal, Mamta & others. Business Communication, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.