APA (7th ed.) Citation

Pegg, M. G. (2008). A most holy war: The Albigensian crusade and the battle for Christendom. Oxford Univ. Press.

Chicago Style (17th ed.) Citation

Pegg, Mark Gregory. A Most Holy War: The Albigensian Crusade and the Battle for Christendom. Oxford [u.a.]: Oxford Univ. Press, 2008.

MLA (9th ed.) Citation

Pegg, Mark Gregory. A Most Holy War: The Albigensian Crusade and the Battle for Christendom. Oxford Univ. Press, 2008.