1. Bickerton, D. (1995). Language and human behavior. Seattle, WA: University of Washington Press.
2. Devlin, K. (2000). The Math Gene: How mathematical thinking evolved and why numbers are like gossip. Basic Books.
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4. Lakoff, G., & Johnson, M. (1980). Metaphors we live by. University of Chicago Press.
5. Lakoff, G., & Nunez, R. (2000). Where mathematics comes from: How the embodied mind brings mathematics into being. Basic Books.