Underhill, P. (2000). Why we buy: The science of shopping. Texere.
Chicago Style aipamenaUnderhill, Paco. Why We Buy: The Science of Shopping. London: Texere, 2000.
MLA aipamenaUnderhill, Paco. Why We Buy: The Science of Shopping. Texere, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.