APA-referens (7:e uppl.)

Brooke, C. N. L. (1987). Europe in the central Middle Ages, 962-1154 (2nd ed.). Longman.

Chicago-referens (17:e uppl.)

Brooke, Christopher Nugent Lawrence. Europe in the Central Middle Ages, 962-1154. 2nd ed. London: Longman, 1987.

MLA-referens (9:e uppl.)

Brooke, Christopher Nugent Lawrence. Europe in the Central Middle Ages, 962-1154. 2nd ed. Longman, 1987.