Cain, S. (2013). Quiet: The power of introverts in a world that can't stop talking. Penguin Books.
Cita Chicago (17th ed.)Cain, Susan. Quiet: The Power of Introverts in a World That Can't Stop Talking. London: Penguin Books, 2013.
Cita MLA (9th ed.)Cain, Susan. Quiet: The Power of Introverts in a World That Can't Stop Talking. Penguin Books, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.