APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Eco, Umberto, and James Fentress. The Search for the Perfect Language. Oxford: Blackwell, 1995.

MLA (9th ed.) Citation

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