Style de citation APA (7e éd.)

Gostick, A. R., & Christopher, S. (2008). The levity effect: Why it pays to lighten up. John Wiley & Sons.

Style de citation Chicago (17e éd.)

Gostick, Adrian Robert, et Scott Christopher. The Levity Effect: Why It Pays to Lighten Up. Hoboken, N.J.: John Wiley & Sons, 2008.

Style de citation MLA (8e éd.)

Gostick, Adrian Robert, et Scott Christopher. The Levity Effect: Why It Pays to Lighten Up. John Wiley & Sons, 2008.