Cita APA (7th ed.)

Eco, U. (1990). Foucalt's pendulum. Ballantine Books.

Cita Chicago (17th ed.)

Eco, Umberto. Foucalt's Pendulum. New York: Ballantine Books, 1990.

Cita MLA (9th ed.)

Eco, Umberto. Foucalt's Pendulum. Ballantine Books, 1990.