McMahon, April and Robert McMahon (2013). Evolutionary linguistics. (Cambridge textbooks in linguistics.) Cambridge: Cambridge University Press. ISBN: 978-0-521-89139-4.
Scott-Phillips, Thomas C. (2015). Speaking our minds. Why human communication is different, and how language evolved to make it special. Houndmills: Palgrave-MacMillan. ISBN: 978-1-137-33456-5.