APA (7th ed.) Citation

Sinek, S. (2017). Leaders eat last: Why some teams pull together and others don't (15th printing.). Portfolio/Penguin.

Chicago Style (17th ed.) Citation

Sinek, Simon. Leaders Eat Last: Why Some Teams Pull Together and Others Don't. 15th printing. New York: Portfolio/Penguin, 2017.

MLA (9th ed.) Citation

Sinek, Simon. Leaders Eat Last: Why Some Teams Pull Together and Others Don't. 15th printing. Portfolio/Penguin, 2017.