Cita APA (7a ed.)

Carlyle, R. W. S., & Carlyle, A. J. (1930). A history of mediaeval political theory in the west (3rd ed.). William Blackwood & Sons.

Cita Chicago Style (17a ed.)

Carlyle, R. W. Sir, y A. J. Carlyle. A History of Mediaeval Political Theory in the West. 3rd ed. Edinburgh [etc.]: William Blackwood & Sons, 1930.

Cita MLA (9a ed.)

Carlyle, R. W. Sir, y A. J. Carlyle. A History of Mediaeval Political Theory in the West. 3rd ed. William Blackwood & Sons, 1930.