Kirby, S. and Christiansen, M. H. (2003) From language learning to language evolution. In M.H. Christiansen and S. Kirby, editors, Language Evolution: The States of the Art . Oxford University Press.

Kirby, S. and Christiansen, M. H. (2003) From language learning to language evolution. In M.H. Christiansen and S. Kirby, editors, Language Evolution: The States of the Art. Oxford University Press.

2008	-	Studying cumulative cultural evolution in the laboratory - Caldwell,Millen	::	6
		Kirby, S. & Christiansen, M. H. 2003 From language learning to language evolution. In Language evolution (eds M. Christiansen & S. Kirby), pp. 272-294. Oxford, UK: Oxford University Press.