Zikmund, W. G. (2008). Business research methods. Cengage Learbubg.
Chicago-čujuhus (17. p.)Zikmund, William G. Business Research Methods. New Delhi: Cengage Learbubg, 2008.
MLA-čujuhus (9. p.)Zikmund, William G. Business Research Methods. Cengage Learbubg, 2008.
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