Style de citation APA

 Harrell, K. (2003).  The attitude of leadership: Taking the lead and keeping it.  Wiley.

Style de citation Chicago

 Harrell, Keith.  The Attitude of Leadership: Taking the Lead and Keeping It.  Wiley, 2003.

Style de citation MLA

 Harrell, Keith.  The Attitude of Leadership: Taking the Lead and Keeping It.  Wiley, 2003.

Attention : ces citations peuvent ne pas être correctes à 100%.