APA (7th ed.) Citation

Eco, U., & Martini, C. M. (2001). Belief or non belief. Continuum.

Chicago Style (17th ed.) Citation

Eco, Umberto, and Carlo M. Martini. Belief or Non Belief. London [u.a.]: Continuum, 2001.

MLA (8th ed.) Citation

Eco, Umberto, and Carlo M. Martini. Belief or Non Belief. Continuum, 2001.