APA
"The Concept of heresy in the Middle Ages" : International conference, Lourdaux W., Verhelst D. & "The Concept of heresy in the Middle Ages" : International conference. (1983). The Concept of heresy in the Middle Ages, (11th-13th c.). Leuven: Leuven University Press.
Chicago
"The Concept of heresy in the Middle Ages" : International conference, Lourdaux W, Verhelst D and "The Concept of heresy in the Middle Ages" : International conference. 1983. The Concept of heresy in the Middle Ages, (11th-13th c.). Leuven: Leuven University Press.
Harvard
"The Concept of heresy in the Middle Ages" : International conference, Lourdaux W., Verhelst D. and "The Concept of heresy in the Middle Ages" : International conference. (1983). The Concept of heresy in the Middle Ages, (11th-13th c.). Leuven: Leuven University Press.
MLA
"The Concept of heresy in the Middle Ages" : International conference, Lourdaux W, Verhelst D and "The Concept of heresy in the Middle Ages" : International conference. The Concept of heresy in the Middle Ages, (11th-13th c.). Leuven: Leuven University Press. 1983.
