APA-referens (7:e uppl.)

Collins, R. W. (1936). A history of medieval civilization in Europe. Ginn and Company.

Chicago-referens (17:e uppl.)

Collins, Ross William. A History of Medieval Civilization in Europe. Boston, Massachusetts: Ginn and Company, 1936.

MLA-referens (9:e uppl.)

Collins, Ross William. A History of Medieval Civilization in Europe. Ginn and Company, 1936.