Gaya APA

Kouzes, J., Posner, B. (2014). Turning Adversity Into Opportunity : From The Bestselling Authors of The Leadeship Challenge . San Francisco: Jossey Bass.

Gaya MLA

Kouzes, James., Posner, Barry. "Turning Adversity Into Opportunity : From The Bestselling Authors of The Leadeship Challenge". San Francisco: Jossey Bass, 2014. Text.