Barber, E. J. W. and Peters, A. M. W. (1992) Ontongeny and Phylogeny: What Child Language and Archaeology Have to Say to Each Other. In Hawkins, John A. and Murray Gell-Mann, editors, The Evolution of Human Languages . Reading, MA: Addison-Wesley.

Barber, E. J. W. and Peters, A. M. W. (1992) Ontongeny and Phylogeny: What Child Language and Archaeology Have to Say to Each Other. In Hawkins, John A. and Murray Gell-Mann, editors, The Evolution of Human Languages. Reading, MA: Addison-Wesley.

1995