Martin, p. 65, no. 231. Jacques-Paul Migne (1853). Patrologiae latinae cursus completus (in Latin). Vol. Tomus CXLI. Paris: Aqud Editorem. pp. 1157–1158.
Thomas Oestereich, "Pope Damasus II."The Catholic Encyclopedia Vol. 4. New York: Robert Appleton Company, 1908. 13 July 2021. Fisquet, p. 173. Chronique de l'abbaye de Saint-Bénigne de Dijon. pp. 190–191.: "diligebant enim eum valde Romani, propter facundiam oris sui, et affabilitatem sermonis; ita enim proferebat vernaculum sonum loquelae uniuscuiusque gentis, quousque latine penetrat lingua, haesi eadem patria esset progenitus."
Thomas Oestereich, "Pope Damasus II."The Catholic Encyclopedia Vol. 4. New York: Robert Appleton Company, 1908. 13 July 2021. Fisquet, p. 173. Chronique de l'abbaye de Saint-Bénigne de Dijon. pp. 190–191.: "diligebant enim eum valde Romani, propter facundiam oris sui, et affabilitatem sermonis; ita enim proferebat vernaculum sonum loquelae uniuscuiusque gentis, quousque latine penetrat lingua, haesi eadem patria esset progenitus."