Knight, C. (2000) Play as a precursor of phonology and syntax. In Chris Knight and James R. Hurford and Michael Studdert-Kennedy, editors, The Evolutionary Emergence of Language: Social Function and the Origins of Linguistic Form . Cambridge: Cambridge University Press.

Knight, C. (2000) Play as a precursor of phonology and syntax. In Chris Knight and James R. Hurford and Michael Studdert-Kennedy, editors, The Evolutionary Emergence of Language: Social Function and the Origins of Linguistic Form. Cambridge: Cambridge University Press.

2003	-	The Language Mosaic and its Evolution - Hurford	::	7
2008	-	Unravelling Digital Infinity - Knight,Power	::
2008	-	Language co-evolved with the rule of law - Knight	::