Aaker, D. A. Marketing Research (9th.). Wiley India.
Chicago-čujuhus (17. p.)Aaker, David A. Marketing Research. 9th. Wiley India.
MLA-čujuhus (9. p.)Aaker, David A. Marketing Research. 9th. Wiley India.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.