APA (7th ed.) Citation

Cain, S. (2012). Quiet: The power of introverts in a world that can't stop talking. Penguin Books.

Chicago Style (17th ed.) Citation

Cain, Susan. Quiet: The Power of Introverts in a World That Can't Stop Talking. New York: Penguin Books, 2012.

MLA (8th ed.) Citation

Cain, Susan. Quiet: The Power of Introverts in a World That Can't Stop Talking. Penguin Books, 2012.