Bhattacharyya, D. (2003). Research methodology. Excel.
Chicago-čujuhus (17. p.)Bhattacharyya, Dipak. Research Methodology. New Delhi: Excel, 2003.
MLA-čujuhus (9. p.)Bhattacharyya, Dipak. Research Methodology. Excel, 2003.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.