↑(en) J.M.P. Calise Pictish Sourcebook, Documents of Medieval Legend and Dark Age History Greenwood Press (Londres 2002) (ISBN0313322953) p. 190
Sources
(en) J.P.M. Calise, Pictish Sourcebook, Documents of Medieval Legend and Dark Age History, Londres, Greenwood Press, , 365 p. (ISBN0313322953), p. 190 Brude f. Fochel (Brude VII, Brude son of Fochel) Pictish king (?843-?845).
(en) William Arthur Cumming, The Age of the Picts, Stroud, Sutton Publishing, , 256 p. (ISBN978-0752449593).
(en) William Forbes SkeneChronicles Of The Picts,Chronicles Of The Scots, And Other Early Memorials Of Scottish History. H.M General Register House Edinburgh (1867) Reprint par Kessinger Publishings's (2007) (ISBN1432551051).