Wollan, R. &. O. (2013). Selling through someone else. John Wiley.
Chicago-čujuhus (17. p.)Wollan, Robert & Others. Selling Through Someone Else. New Jersey: John Wiley, 2013.
MLA-čujuhus (9. p.)Wollan, Robert & Others. Selling Through Someone Else. John Wiley, 2013.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.