Gaya APA

Schaff, P., Wace, H. (1999). Nicene and Post-Nicene Fathers Second Series: Volume 12 Leo the Great, Gregory the Great (Second Edition). USA: Hendrickson Publishers.

Gaya MLA

Schaff, Philip., Wace, Henry. "Nicene and Post-Nicene Fathers Second Series: Volume 12 Leo the Great, Gregory the Great". Second Edition USA: Hendrickson Publishers, 1999. Academic.