Cita APA (7a ed.)

Eco, U. (1976). A Theory of Semiotics. Indiana University Press.

Cita Chicago Style (17a ed.)

Eco, Umberto. A Theory of Semiotics. Bloomington: Indiana University Press, 1976.

Cita MLA (8a ed.)

Eco, Umberto. A Theory of Semiotics. Indiana University Press, 1976.