Sinek, S., & Sinek, S. (2009). Start with why: How great leaders inspire everyone to take action. New York, New York: Portfolio/Penguin.
Chicago Style CitationSinek, Simon, and Simon Sinek. Start With Why: How Great Leaders Inspire Everyone to Take Action. New York, New York: Portfolio/Penguin, 2009.
MLA CitationSinek, Simon, and Simon Sinek. Start With Why: How Great Leaders Inspire Everyone to Take Action. New York, New York: Portfolio/Penguin, 2009.
Warning: These citations may not always be 100% accurate.