Franco Júnior, H. (2010). Catolicismo e catarismo, um choque entre mitologias (Catharism and Catholicism, a clash between mythologies) - DOI: 10.5752/P.2237-8871.2010v11n14p9. Cadernos De História, 11(14), 9–28. https://doi.org/10.5752/P.2237-8871.2010v11n14p9