APA (7th ed.) Citation

Eco, U. (1995). The search for the perfect language. Blackwell.

Chicago Style (17th ed.) Citation

Eco, Umberto. The Search for the Perfect Language. Oxford, UK, Cambridge, Mass., USA: Blackwell, 1995.

MLA (9th ed.) Citation

Eco, Umberto. The Search for the Perfect Language. Blackwell, 1995.