Aaker, D. A. (1986). Marketing research (3ª ed.). John Wiley and Sons.
Chicago-čujuhus (17. p.)Aaker, David A. Marketing Research. 3ª ed. John Wiley and Sons, 1986.
MLA-čujuhus (9. p.)Aaker, David A. Marketing Research. 3ª ed. John Wiley and Sons, 1986.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.