↑Fryde et al. 1986, Handbook of British Chronology, 3rd Edition, pp. 283–284.
↑Horn & Smith 1979, Fasti Ecclesiae Anglicanae 1541–1857, volume 4, pp. 1–5.
Referensi
Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I., ed. (1986). Handbook of British Chronology (Edisi 3rd, reprinted 2003). Cambridge: Cambridge University Press. ISBN0-521-56350-X.
Greenway, D. E. (1999). "Archbishops of York". Fasti Ecclesiae Anglicanae 1066–1300. Vol.Volume 6: York. British History Online. ; ; ;
Jones, B (1963). "Archbishops of York". Fasti Ecclesiae Anglicanae 1300–1541. Vol.Volume 6: Northern Province (York, Carlise and Durham). British History Online. ; ; ;
Foot, Sarah (2011). Foster, Paul; Moriarty, Rachel (ed.). The Bishops of Selsey and the creation of a Diocese in Sussex. Otter memorial Paper. Vol.27. Chichester: University of Chichester. ISBN978-1-907852-03-9. ;
Horn, J. M.; Smith, D. M. (1979). "Archbishops of York". Fasti Ecclesiae Anglicanae 1541–1857. Vol.Volume 4: York Diocese. British History Online. ; ; ;
Story, Joanna (August 2012). "Bede, Willibrord and the Letters of Pope Honorius I on the Genesis of the Archbishopric of York". English Historical Review. cxxvii (527): 783–818. doi:10.1093/ehr/ces142.