APA (7th ed.) Citation

Eco, U., & Weaver, W. (1999). Serendipities: Language & lunacy. Harcourt Brace.

Chicago Style (17th ed.) Citation

Eco, Umberto, and William Weaver. Serendipities: Language & Lunacy. San Diego, Calif: Harcourt Brace, 1999.

MLA (9th ed.) Citation

Eco, Umberto, and William Weaver. Serendipities: Language & Lunacy. Harcourt Brace, 1999.