Cita APA (7a ed.)

Barber, M. (2000). The Cathars: Dualist heretics in Languedoc in the High Middle Ages (1. publ.). Longman.

Cita Chicago Style (17a ed.)

Barber, Malcolm. The Cathars: Dualist Heretics in Languedoc in the High Middle Ages. 1. publ. Harlow, England Munich [u.a.]: Longman, 2000.

Cita MLA (8a ed.)

Barber, Malcolm. The Cathars: Dualist Heretics in Languedoc in the High Middle Ages. 1. publ. Longman, 2000.

Precaución: Estas citas no son 100% exactas.