MLA

Gutiérrez, David, and Thomas F Martin. The Augustinians In the Middle Ages 1357-1517. Villanova: Villanova university. Augustinian historical institute, 1983.

APA

Gutiérrez, D., & Martin, T. F. (1983). The Augustinians in the Middle Ages 1357-1517. Villanova: Villanova university. Augustinian historical institute.

Chicago

Gutiérrez, David The Augustinians In the Middle Ages 1357-1517. Translated by Thomas F Martin. Villanova: Villanova university. Augustinian historical institute, 1983.