DOUGLAS, S. P. (1983). International Marketing Research / Susan P. Douglas And C. Samuel Craig. Prentice Hall.
Čikaški stil citiranja (17. izdanje)DOUGLAS, Susan P. International Marketing Research / Susan P. Douglas And C. Samuel Craig. Prentice Hall, 1983.
MLA način citiranja (8. izdanje)DOUGLAS, Susan P. International Marketing Research / Susan P. Douglas And C. Samuel Craig. Prentice Hall, 1983.
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