B?KER:
Fitch, W. Tecumseh. The Evolutioon of Language, 2010. Cambridge University Press. ISBN: 978-0-521-67736-3. (611 sider.)
McNeill, David 2012. How Language Began. Gesture and Speech in Human Evolution. Cambridge University Press. ISBN: 978-1-107-60549-7. (264 sider.)
NETTARTIKLER:
Hauser, Marc D., Noam Chomsky, and W. Tecumseh Fitch 2002. “The Faculty of Language: What Is It, Who Has It, and How Did It Evolve?” Science Vol. 298, s. 1569–1579. Kan lastast ned p?: http://www.chomsky.info/articles/20021122.pdf