1. Anderson, A.O. (Ed.). (1936). The Chronicle of Melrose from the Cottonian Manuscript, Faustina B. IX in the British Museum. Anderson, A.O., and Anderson, M.O. (Eds.), Studies in Economics and Political Science, Vol. 100. Bradford: Percy Lund, Humphries & Co.
2. Chronicon Slavorum;Arnold of Lübeck,1968
3. De civitate Dei;Augustine of Hippo,1955
4. Bloch, H. (Ed.). (1907). Annales Marbacenses. Monumenta Germaniae Historica SS rer. Germ. 9. Hannover: Impensis Bibliopolii Hahniani. http://www.mgh.de/dmgh/resolving/MGH_SS_rer._Germ._9_S._I.
5. Dunstable Annals;Bowman,2016