Lourdaux, W., & Verhelst, D. (1983). The Concept of Heresy in the Middle Ages (11th-13th C.). Leuven University Press.
Chicago Style (17th ed.) CitationLourdaux, W., and D. Verhelst. The Concept of Heresy in the Middle Ages (11th-13th C.). Leuven University Press, 1983.
MLA (9th ed.) CitationLourdaux, W., and D. Verhelst. The Concept of Heresy in the Middle Ages (11th-13th C.). Leuven University Press, 1983.
Warning: These citations may not always be 100% accurate.