Cita APA (7a ed.)

Tyerman, C. (2004). Fighting for Christendom: Holy war and the crusades. Oxford University Press.

Cita Chicago Style (17a ed.)

Tyerman, Christopher. Fighting for Christendom: Holy War and the Crusades. Oxford ; New York: Oxford University Press, 2004.

Cita MLA (8a ed.)

Tyerman, Christopher. Fighting for Christendom: Holy War and the Crusades. Oxford University Press, 2004.