Cita APA (7a ed.)

Lyon, B. (1965). The Middle Ages in recent historical thought: Selected topics (2nd ed.). Service Center for Teachers of History.

Cita Chicago Style (17a ed.)

Lyon, Bryce. The Middle Ages in Recent Historical Thought: Selected Topics. 2nd ed. Washington: Service Center for Teachers of History, 1965.

Cita MLA (9a ed.)

Lyon, Bryce. The Middle Ages in Recent Historical Thought: Selected Topics. 2nd ed. Service Center for Teachers of History, 1965.