Cain, S. (2013). Quiet: The power of introverts in a world that can't stop talking. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Cain, Susan. Quiet: The Power of Introverts in a World That Can't Stop Talking. London: Penguin Books, 2013.
Lua MLA (9ú heag.)Cain, Susan. Quiet: The Power of Introverts in a World That Can't Stop Talking. Penguin Books, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.