Kothari, C. (2004). Research Methodology (2.). New Age.
Chicago-čujuhus (17. p.)Kothari, C.R. Research Methodology. 2. New Delhi: New Age, 2004.
MLA-čujuhus (9. p.)Kothari, C.R. Research Methodology. 2. New Age, 2004.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.