* Texts of Folquet's poems (in Occitan)* His diocesan letter of 1215 approving Dominic's brotherhood of preachers (French translation of the Latin original)==Historical sources==* pp.
* «Столь куртуазный тон возьму…»* His diocesan letter of 1215 approving Dominic’s brotherhood of preachers (French translation of the Latin original)* Жизнеописание трубадуров.