Port, M., & Marshall, E. (2008). The contrarian effect: Why it pays (big) to take typical sales advice and do the opposite. John Wiley & Sons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPort, Michael, और Elizabeth Marshall. The Contrarian Effect: Why It Pays (big) to Take Typical Sales Advice and Do the Opposite. Hoboken, N.J.: John Wiley & Sons, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPort, Michael, और Elizabeth Marshall. The Contrarian Effect: Why It Pays (big) to Take Typical Sales Advice and Do the Opposite. John Wiley & Sons, 2008.
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