Sermons / Guerricus Igniacensis.

MLA

Guerricus Igniacensis, John Morson, and Placide Deseille. Sermons / Guerricus Igniacensis. Paris: Cerf, 1970.

APA

Guerricus Igniacensis, G. Igniacensis, Morson, J., & Deseille, P. (1970). Sermons / Guerricus Igniacensis. Paris: Cerf.

Chicago

Guerricus Igniacensis. Sermons / Guerricus Igniacensis. Translated by Placide Deseille. Edited by John Morson. Paris: Cerf, 1970.