Cita APA (7a ed.)

Lyon, B. (1965). The high Middle Ages, 1000-1300. Free Press of Glencoe.

Cita Chicago Style (17a ed.)

Lyon, Bryce. The High Middle Ages, 1000-1300. [New York]: Free Press of Glencoe, 1965.

Cita MLA (9a ed.)

Lyon, Bryce. The High Middle Ages, 1000-1300. Free Press of Glencoe, 1965.