Sethna, B. (1984). Research methods in marketing and mgt. Tata McGraw Hill.
Chicago-čujuhus (17. p.)Sethna, B. Research Methods in Marketing and Mgt. New Delhi: Tata McGraw Hill, 1984.
MLA-čujuhus (9. p.)Sethna, B. Research Methods in Marketing and Mgt. Tata McGraw Hill, 1984.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.