R. Cooper, D., S. Schindler, P., & Sharma, . J. K. (2012). Business Research Methods. Mc Graw Hill.
Chicago-čujuhus (17. p.)R. Cooper, Donald, Pamela S. Schindler, juo J. K. Sharma. Business Research Methods. New Delhi: Mc Graw Hill, 2012.
MLA-čujuhus (9. p.)R. Cooper, Donald, et al. Business Research Methods. Mc Graw Hill, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.