Calvin, W. H. (1996). How brains think: Evolving intelligence, then and now. Basic Books, a division of HarperCollins Publishers, Inc.
Lua i Stíl Chicago (17ú heag.)Calvin, William H. How Brains Think: Evolving Intelligence, Then and Now. New York, NY: Basic Books, a division of HarperCollins Publishers, Inc, 1996.
Lua MLA (9ú heag.)Calvin, William H. How Brains Think: Evolving Intelligence, Then and Now. Basic Books, a division of HarperCollins Publishers, Inc, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.