Cita APA (7a ed.)

Nicholson, H. J. (2011). On the margins of crusading: The military orders, the Papacy and the Christian world. Ashgate.

Cita Chicago Style (17a ed.)

Nicholson, Helen J. On the Margins of Crusading: The Military Orders, the Papacy and the Christian World. Farnham, U.K. ; Burlington, Vt.: Ashgate, 2011.

Cita MLA (9a ed.)

Nicholson, Helen J. On the Margins of Crusading: The Military Orders, the Papacy and the Christian World. Ashgate, 2011.