Bajpai, N. (2015). Marketing Research (1st.). Pearson.
Chicago-čujuhus (17. p.)Bajpai, Naval. Marketing Research. 1st. Noida: Pearson, 2015.
MLA-čujuhus (9. p.)Bajpai, Naval. Marketing Research. 1st. Pearson, 2015.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.