Eco, U. (1989). On the Medieval theory of signs. Jhon Benjamins Publishing Company.
Chicago Style (17th ed.) CitationEco, Umberto. On the Medieval Theory of Signs. Jhon Benjamins Publishing Company, 1989.
MLA (8th ed.) CitationEco, Umberto. On the Medieval Theory of Signs. Jhon Benjamins Publishing Company, 1989.
Warning: These citations may not always be 100% accurate.