Cooper, D. (2006). BUSINESS RESEARCH METHODS (9th.). McGraw Hill.
Čikaški stil citiranja (17. izdanje)Cooper, Donald. BUSINESS RESEARCH METHODS. 9th. New Delhi: McGraw Hill, 2006.
MLA način citiranja (9. izdanje)Cooper, Donald. BUSINESS RESEARCH METHODS. 9th. McGraw Hill, 2006.
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