Cita APA (7a ed.)

Wells, P. S. (2008). Barbarians to angels: The Dark Ages reconsidered. W.W. Norton.

Cita Chicago Style (17a ed.)

Wells, Peter S. Barbarians to Angels: The Dark Ages Reconsidered. New York: W.W. Norton, 2008.

Cita MLA (8a ed.)

Wells, Peter S. Barbarians to Angels: The Dark Ages Reconsidered. W.W. Norton, 2008.

Precaución: Estas citas no son 100% exactas.