Worden, R. (2000) Words, memes and language evolution. 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.

Worden, R. (2000) Words, memes and language evolution. 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.

Smith, Natural selection and cultural selection in the evolution of communication, 2002	::	10
Tamariz, Exploring the Adaptive Structure of the Mental Lexicon, 2005	::