Gundissalinus, D., & Laumakis, J. A. (2002). The Procession of the world. Marquette University Press.

Gundissalinus, Dominicus, and John A. Laumakis. The Procession of the World. Milwaukee, Wis.: Marquette University Press, 2002.

Gundissalinus, Dominicus, and John A. Laumakis. The Procession of the World. Marquette University Press, 2002.