Buttle, F. (2004). Customer Relationship Management. Elesvier.
Chicago-čujuhus (17. p.)Buttle, Francis. Customer Relationship Management. New Delhi: Elesvier, 2004.
MLA-čujuhus (9. p.)Buttle, Francis. Customer Relationship Management. Elesvier, 2004.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.