Kumar, V. (2008). Managing Customers for Profit. Pearson.
Chicago-čujuhus (17. p.)Kumar, V. Managing Customers for Profit. New Jersey: Pearson, 2008.
MLA-čujuhus (9. p.)Kumar, V. Managing Customers for Profit. Pearson, 2008.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.