Duhem, P. M. M., & Ariew, R. (1985). Medieval cosmology: Theories of infinity, place, time, void, and the plurality of worlds. University of Chicago Press.

Duhem, Pierre Maurice Marie, and Roger Ariew. Medieval Cosmology: Theories of Infinity, Place, Time, Void, and the Plurality of Worlds. Chicago: University of Chicago Press, 1985.

Duhem, Pierre Maurice Marie, and Roger Ariew. Medieval Cosmology: Theories of Infinity, Place, Time, Void, and the Plurality of Worlds. University of Chicago Press, 1985.