Gregory I, P. (1472). [Liber epistolarum]. Gunther Zainer.
Chicago Style (17th ed.) CitationGregory I, Pope. [Liber Epistolarum]. [Augsburg: Gunther Zainer, 1472.
MLA (8th ed.) CitationGregory I, Pope. [Liber Epistolarum]. Gunther Zainer, 1472.
Warning: These citations may not always be 100% accurate.