Das, S. (2007). Customer relationship management. Excel.
Chicago-čujuhus (17. p.)Das, Subhasish. Customer Relationship Management. New Delhi: Excel, 2007.
MLA-čujuhus (9. p.)Das, Subhasish. Customer Relationship Management. Excel, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.