1. Bickerton, D. (1990). Language and species. Chicago: University of Chicago Press.
2. Bratman, M. E., Israel, D. J., & Pollack, M. E. (1988). Plans and resource-bounded practical reasoning. Computational Intelligence, 4(4), 349–355.
3. Chomsky, N. (2000). New horizons in the study of language and mind. Cambridge: Cambridge University Press.
4. Dessalles, J.-L. (1998). Altruism, status, and the origin of relevance. In J. R. Hurford, M. Studdert-Kennedy, & C. Knight (Eds.), Approaches to the evolution of language: Social and cognitive bases (pp. 130–147). Cambridge: Cambridge University Press.
5. Dessalles, J.-L. (2007). Why we talk – The evolutionary origins of language. Oxford: Oxford University Press.