Cita APA (7a ed.)

Tyerman, C. (2005). The Crusades: A very short introduction. Oxford University Press.

Cita Chicago Style (17a ed.)

Tyerman, Christopher. The Crusades: A Very Short Introduction. Oxford ; New York: Oxford University Press, 2005.

Cita MLA (8a ed.)

Tyerman, Christopher. The Crusades: A Very Short Introduction. Oxford University Press, 2005.