Underhill, P. (1999). Why we buy: The science of shopping. Simon & Schuster.
Čikaški stil citiranjaUnderhill, Paco. Why We Buy: The Science of Shopping. New York: Simon & Schuster, 1999.
MLA način citiranjaUnderhill, Paco. Why We Buy: The Science of Shopping. Simon & Schuster, 1999.
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