Cita APA (7a ed.)

Sebeok, T. A., & Smith, I. (1991). American signatures: Semiotic inquiry and method. University of Oklahoma Press.

Cita Chicago Style (17a ed.)

Sebeok, Thomas A., y Iris Smith. American Signatures: Semiotic Inquiry and Method. Norman (USA) [etc.]: University of Oklahoma Press, 1991.

Cita MLA (9a ed.)

Sebeok, Thomas A., y Iris Smith. American Signatures: Semiotic Inquiry and Method. University of Oklahoma Press, 1991.