APA (7th ed.) Citation

Barber, M. (2013). The Cathars: Dualist heretics in Languedoc in the High Middle Ages (2. ed.). Pearson.

Chicago Style (17th ed.) Citation

Barber, Malcolm. The Cathars: Dualist Heretics in Languedoc in the High Middle Ages. 2. ed. Harlow, England [u.a.]: Pearson, 2013.

MLA (9th ed.) Citation

Barber, Malcolm. The Cathars: Dualist Heretics in Languedoc in the High Middle Ages. 2. ed. Pearson, 2013.