符号
Charles S. Peirce, Peirce on Signs: Writings on Semiotic (Chapel Hill, NC: University of North Carolina Press, 1991)
互动
Charles Horton Cooley, Human Nature and the Social Order, Social Science Classics series (New Brunswick, NJ: Transaction Books, 1983)
世界中的符号
Roland Barthes, Mythologies (Paris: Éditions du Seuil, 1970)
