Blackman ,Jeff. (2003). Stop whining start selling. John Wiley & Sons.
Chicago-čujuhus (17. p.)Blackman ,Jeff. Stop Whining Start Selling. John Wiley & Sons, 2003.
MLA-čujuhus (9. p.)Blackman ,Jeff. Stop Whining Start Selling. John Wiley & Sons, 2003.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.