Cita APA (7a ed.)

Riddle, J. M. (2008). A history of the Middle Ages, 300-1500. Rowman & Littlefield.

Cita Chicago Style (17a ed.)

Riddle, John M. A History of the Middle Ages, 300-1500. Lanham [etc.]: Rowman & Littlefield, 2008.

Cita MLA (9a ed.)

Riddle, John M. A History of the Middle Ages, 300-1500. Rowman & Littlefield, 2008.