Gw mau tau "Liber Apologeticus" . dari Priscillianisme

Fletcher, Richard A., St. James' Catapult: The Life and Times of Diego Gelmirez, Chapter 1 and passim: *Galicia, online at  a historical and geographical background to the building of the cathedral in Compostela

Burras, Virginia, The Making of a Heretic, (University of California Press, 1995)