MLA

Ambrosius Mediolanensis, and Roger Gryson. La Pénitence. Paris: Cerf, 1971.

APA

Ambrosius Mediolanensis, A. Mediolanensis, & Gryson, R. (1971). La pénitence. Paris: Cerf.

Chicago

Ambrosius Mediolanensis, La Pénitence. Translated by Roger Gryson. Paris: Cerf, 1971.