Wilson, Josephine F.
Biological foundations of human behavior
Tomson Wadsworth, 2003
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Mercer, E.H.
The foundations of biological theory
John Wiley & Sons, 1981
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Vendryes, J. (Joseph), 1875-1960
Language : a linguistic introduction to history
Routledge, 1996
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Schiffman, Harold F.
Linguistic culture and language policy
Routledge, 1996
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Sandler, Wendy
Sign language and linguistic universals
Cambridge University Press, 2006
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