APA (7th ed.) Citation
Sinek, S. (2014). Leaders eat last: Why some teams pull together and others don't. Portfolio Penguin.
Chicago Style (17th ed.) Citation
Sinek, Simon. Leaders Eat Last: Why Some Teams Pull Together and Others Don't. London: Portfolio Penguin, 2014.
MLA (9th ed.) Citation
Sinek, Simon. Leaders Eat Last: Why Some Teams Pull Together and Others Don't. Portfolio Penguin, 2014.
Warning: These citations may not always be 100% accurate.