APA (7th ed.) Citation

Eco, U., & Sebeok, T. A. (1988). The Sign of three: Dupin, Holmes, Peirce (1st Midland bk. ed.). Indiana University Press.

Chicago Style (17th ed.) Citation

Eco, Umberto, and Thomas A. Sebeok. The Sign of Three: Dupin, Holmes, Peirce. 1st Midland bk. ed. Bloomington: Indiana University Press, 1988.

MLA (9th ed.) Citation

Eco, Umberto, and Thomas A. Sebeok. The Sign of Three: Dupin, Holmes, Peirce. 1st Midland bk. ed. Indiana University Press, 1988.