APA (7th ed.) Citation

Eco, U., & Weaver, W. (1996). The island of the day before. Mandarin Paperbacks.

Chicago Style (17th ed.) Citation

Eco, Umberto, and William Weaver. The Island of the Day Before. London: Mandarin Paperbacks, 1996.

MLA (9th ed.) Citation

Eco, Umberto, and William Weaver. The Island of the Day Before. Mandarin Paperbacks, 1996.