Start with why : how great leaders inspire everyone to take action
MLA
Sinek, Simon. Start with Why: How Great Leaders Inspire Everyone to Take Action. New York: Portfolio, 2009
APA, 7th edition
Sinek, S. (2009). Start with why: how great leaders inspire everyone to take action. New York: Portfolio
Chicago, 17th edition
Sinek, Simon. Start with why: how great leaders inspire everyone to take action. New York: Portfolio, 2009