APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.