Kothari, C. R. (2019). Research Methodology. New Age International Publishers.
Chicago-čujuhus (17. p.)Kothari, C R. Research Methodology. New Delhi: New Age International Publishers, 2019.
MLA-čujuhus (9. p.)Kothari, C R. Research Methodology. New Age International Publishers, 2019.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.