@book {2004,
	title = {Religion in the history of the medieval West},
	series = {Variorum collected studies series},
	year = {2004},
	pages = {344},
	publisher = {Variorum},
	organization = {Variorum},
	address = {Aldershot},
	isbn = {978-0-86078-940-6},
	author = {Engen, John van}
}
