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