APA-referens (7:e uppl.)

Tierney, B. (1999). The middle ages: Sources of medieval history. McGraw - Hill.

Chicago-referens (17:e uppl.)

Tierney, Brian. The Middle Ages: Sources of Medieval History. New York: McGraw - Hill, 1999.

MLA-referens (9:e uppl.)

Tierney, Brian. The Middle Ages: Sources of Medieval History. McGraw - Hill, 1999.