APA (7th ed.) Citation
Gostick, A. R., & Christopher, S. (2008). The levity effect: Why it pays to lighten up. John Wiley & Sons.
Chicago Style (17th ed.) Citation
Gostick, Adrian Robert, and Scott Christopher. The Levity Effect: Why It Pays to Lighten Up. Hoboken, N.J.: John Wiley & Sons, 2008.
MLA (9th ed.) Citation
Gostick, Adrian Robert, and Scott Christopher. The Levity Effect: Why It Pays to Lighten Up. John Wiley & Sons, 2008.
Warning: These citations may not always be 100% accurate.