Gaya APA

The Civilization of the middle ages: a completely revised and expanded edition of medieval history, the life and death of a civilization. (1993). New York: HarperCollins.

Gaya MLA

The Civilization of the middle ages: a completely revised and expanded edition of medieval history, the life and death of a civilization. cet. 4. New York: HarperCollins, 1993. Text.