Coleman, J. Never Lose a Customer Again. Portfolio.
Chicago-čujuhus (17. p.)Coleman, Joey. Never Lose a Customer Again. Portfolio.
MLA-čujuhus (9. p.)Coleman, Joey. Never Lose a Customer Again. Portfolio.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.