Cita APA (7a ed.)

Sebeok, T. A. (1991). A sign is just a sign. Indiana University Press.

Cita Chicago Style (17a ed.)

Sebeok, Thomas A. A Sign Is Just a Sign. Bloomington [etc.]: Indiana University Press, 1991.

Cita MLA (9a ed.)

Sebeok, Thomas A. A Sign Is Just a Sign. Indiana University Press, 1991.