Silver, L. &. o. The Essentials of Marketing Research. London.
Chicago-čujuhus (17. p.)Silver, Lawrence & others. The Essentials of Marketing Research. London.
MLA-čujuhus (9. p.)Silver, Lawrence & others. The Essentials of Marketing Research. London.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.