Slobin，D.1985.Crosslinguistic evidence for the language-making capacity.In D.I.Slobin，ed.，The cross linguistic study of language acquisition，Vol.2：Theoretical issues.Hillsdale，NJ：Lawrence Erlbaum，1157-1260.
Smith，J.M.，and E?rs Szathmáry.1995.The Major Transitions in Evolution.Oxford，England：Oxford University Press.