Martin, R. (1963). Practical speech for Modern Business. Century coffe.
Chicago-čujuhus (17. p.)Martin, Robinson. Practical Speech for Modern Business. Appleton: Century coffe, 1963.
MLA-čujuhus (9. p.)Martin, Robinson. Practical Speech for Modern Business. Century coffe, 1963.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.