APA (7e ed.) Bronvermelding

Martin, S. (2014). The Cathars: The rise and fall of the great heresy. Pocket Essentials.

Chicago (17e ed.) Bronvermelding

Martin, Sean. The Cathars: The Rise and Fall of the Great Heresy. Herts, Alabama: Pocket Essentials, 2014.

MLA (9e ed.) Bronvermelding

Martin, Sean. The Cathars: The Rise and Fall of the Great Heresy. Pocket Essentials, 2014.