Cain, S. (2013). Quiet: The power of introverts in a world that can't stop talking. Penguin Books.
Chicago-referens (17:e uppl.)Cain, Susan. Quiet: The Power of Introverts in a World That Can't Stop Talking. London: Penguin Books, 2013.
MLA-referens (9:e uppl.)Cain, Susan. Quiet: The Power of Introverts in a World That Can't Stop Talking. Penguin Books, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.