Cita APA (7a ed.)

Asbridge, T. S. (2005). The First Crusade: A new history. Oxford University Press.

Cita Chicago Style (17a ed.)

Asbridge, Thomas S. The First Crusade: A New History. Oxford [etc.]: Oxford University Press, 2005.

Cita MLA (9a ed.)

Asbridge, Thomas S. The First Crusade: A New History. Oxford University Press, 2005.