Colombo George W. (1994). Sales Force Automation. McGraw Hill.
Chicago-čujuhus (17. p.)Colombo George W. Sales Force Automation. New York: McGraw Hill, 1994.
MLA-čujuhus (9. p.)Colombo George W. Sales Force Automation. McGraw Hill, 1994.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.