Singh, K. (2007). Quantitative social research methods. Sage.
Chicago-čujuhus (17. p.)Singh, Kultar. Quantitative Social Research Methods. New Delhi: Sage, 2007.
MLA-čujuhus (9. p.)Singh, Kultar. Quantitative Social Research Methods. Sage, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.