7Frege,Gottlob.On Sense and Nominatum.In Ed.by Peter Greach & Max Black.Translations from the Philosophical Writings of Gottlob Frege[M].Oxford:Basil Blackwell,1980.
8Martin B.& F.Ringham.Dictionary of Semiotics[M].London:Cassell,2000.
9Ogden,C.K.& I.A.Richards.The Meaning of Meaning[M].London:Routledge & Kegan Paul,1923.
10Saussure,F.de.1916.Course in General Linguistics[M].English translation by Roy Harris,1983.