APA (7 वां संस्करण) प्रशस्ति पत्र

Underhill, P. (2009). Why we buy: The science of shopping update and revised for the internet, the global consumer and beyond. Simom & Schuster Paperbacks.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Underhill, Paco. Why We Buy: The Science of Shopping Update and Revised for the Internet, the Global Consumer and Beyond. Simom & Schuster Paperbacks, 2009.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Underhill, Paco. Why We Buy: The Science of Shopping Update and Revised for the Internet, the Global Consumer and Beyond. Simom & Schuster Paperbacks, 2009.

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