APA-referens (7:e uppl.)

Hayes, C. J. H., & Clark, F. F. (1983). Medieval and early modern times: The age of Justinian to the eighteenth century. Macmillan.

Chicago-referens (17:e uppl.)

Hayes, Carlton Joseph Huntley, och Frederick F. Clark. Medieval and Early Modern Times: The Age of Justinian to the Eighteenth Century. New York: Macmillan, 1983.

MLA-referens (9:e uppl.)

Hayes, Carlton Joseph Huntley, och Frederick F. Clark. Medieval and Early Modern Times: The Age of Justinian to the Eighteenth Century. Macmillan, 1983.