Style de citation APA (7e éd.)

Gratian, a. 1. c., & Larson, A. A. (2016). Gratian's Tractatus de penitentia. The Catholic University of America Press.

Style de citation Chicago (17e éd.)

Gratian, active 12th century, et Atria A. Larson. Gratian's Tractatus De Penitentia. Washington, D.C.: The Catholic University of America Press, 2016.

Style de citation MLA (8e éd.)

Gratian, active 12th century, et Atria A. Larson. Gratian's Tractatus De Penitentia. The Catholic University of America Press, 2016.