Aiello, L. C. (1996). Terrestriality, bipedalism, and the origin of language. In Runciman, E. G., Maynard-Smith, J. and Dunbar, R. I. M (eds.), Evolution of social behaviour patterns in primates and man (Proceedings of the British Academy 88). Oxford : Oxford University Press. 269--289.

Bickerton, D. (1990). Language and species. Chicago : University of Chicago Press.

Bybee, J. L. (1985). Morphology : a study of the relation between meaning and form (Typological Studies in Language 9). Amsterdam : John Benjamins.

Diamond, J. (1997). Guns, germs, and steel : the fate of human societies. New York : W. W. Norton.

Greenberg, J. H. (1963). Some universals of language with special reference to the order of meaningful elements. In Greenberg, J. (ed.), Universals of language. Cambridge, MA : MIT Press. 73--113.

Hawkins, J. A. (1994). A performance theory of order and constituency (Cambridge Studies in Linguistics 73). Cambridge : Cambridge University Press.

Hockett, C. F. (1960). The origin of speech. Scientific American 203. 88--96.

Keenan, E. L. & Comrie, B. (1977). Noun phrase accessibility and universal grammar. Linguistic Inquiry 8. 63--99.

Lightfoot, D. W. (1991). Subjacency and sex. Language and Communication 11. 67--69.

Newmeyer, F. J. (1991). Functional explanation in linguistics and the origins of language. Language and Communication 11. 3--28.

Newmeyer, F. J. (1998). Language form and language function. Cambridge, MA : MIT Press.

Nichols, J. (1990). Linguistic diversity and the first settlement of the New World. Language 66. 475--521.

Pinker, S. & Bloom, P. (1990). Natural language and natural selection. Behavioral and Brain Sciences 13. 707--784. review article

Wilkins, W. K. & Wakefield, J. (1995). Brain evolution and neurolinguistic preconditions. Behavioral and Brain Sciences 18. 161--226.