APA (7th ed.) Citation

Eco, U. (1989). Obra aberta. Difel.

Chicago Style (17th ed.) Citation

Eco, Umberto. Obra Aberta. Difel, 1989.

MLA (8th ed.) Citation

Eco, Umberto. Obra Aberta. Difel, 1989.

Warning: These citations may not always be 100% accurate.