Craven, R. (2002). Customer is king: How to exceed their expectations. Virgin Books.
Chicago-čujuhus (17. p.)Craven, Robert. Customer Is King: How to Exceed Their Expectations. London: Virgin Books, 2002.
MLA-čujuhus (9. p.)Craven, Robert. Customer Is King: How to Exceed Their Expectations. Virgin Books, 2002.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.