APA (7th ed.) Citation

Eco, U., & Weaver, W. (1989). Foucault's pendulum. Harcourt Brace Jovanovich.

Chicago Style (17th ed.) Citation

Eco, Umberto, and William Weaver. Foucault's Pendulum. New York: Harcourt Brace Jovanovich, 1989.

MLA (9th ed.) Citation

Eco, Umberto, and William Weaver. Foucault's Pendulum. Harcourt Brace Jovanovich, 1989.