Lua APA (7ú heag.)
Port, M., & Marshall, E. (2008). The contrarian effect: Why it pays (big) to take typical sales advice and do the opposite. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)
Port, Michael, agus 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.
Lua MLA (9ú heag.)
Port, Michael, agus Elizabeth Marshall. The Contrarian Effect: Why It Pays (big) to Take Typical Sales Advice and Do the Opposite. John Wiley & Sons, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.