Duvernoy, J. (1979). L' histoire des cathares. Le catharisme..
Chicago Style (17th ed.) CitationDuvernoy, Jean. "L' Histoire Des Cathares." Le Catharisme. 1979.
MLA (8th ed.) CitationDuvernoy, Jean. "L' Histoire Des Cathares." Le Catharisme., 1979.
Warning: These citations may not always be 100% accurate.