A. Aakter, D. (2009). Marketing Research (9thed.). Willey.
Chicago-čujuhus (17. p.)A. Aakter, David. Marketing Research. 9thed. India: Willey, 2009.
MLA-čujuhus (9. p.)A. Aakter, David. Marketing Research. 9thed. Willey, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.