APA (7th ed.) Citation

Eco, U., Weaver, W., Bruegel, P., & Secondari, L. (1998). Serendipities: Language & lunacy. Columbia University Press.

Chicago Style (17th ed.) Citation

Eco, Umberto, William Weaver, Peter Bruegel, and Linda Secondari. Serendipities: Language & Lunacy. New York: Columbia University Press, 1998.

MLA (9th ed.) Citation

Eco, Umberto, et al. Serendipities: Language & Lunacy. Columbia University Press, 1998.