7Chomsky, N.Review of Verbal Behavior by B F Skinner.Language and philosophy[M].New York: New York University Press,1959.
8Chomsky, N Principles and Prameters in Syntactic Theory.In Hornstein,N and Lightfoot,D (eds.) Explanations in Linguistics: The Logical Problem of Language Acquisition.London: Longman,1981.
9Givon, T.On Understanding grammar[M].Academic Press, New York,1979.
10Givon, T.Universals of Discourse Structure and Second Language Acquisition.In Rutherford, W (ed.) Language Universals and Second Language acquisition.John Benjamins, Amsterdam.