Deira (Czech Wikipedia)

Analysis of information sources in references of the Wikipedia article "Deira" in Czech language version.

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archive.org

SNYDER, Christopher Allen. The Britons, The peoples of Europe. 1. vyd. [s.l.]: John Wiley & Sons, 2003. 331 s. Dostupné online. ISBN 0-631-22260-X. S. 210–212. (anglicky)
HIGHAM, Nicholas John. The Kingdom of Northumbria AD 350–1100. 1. vyd. Stroud: Sutton Publishing, 1993. 320 s. Dostupné online. ISBN 0-86299-730-5. S. 81. (anglicky)
CANNON, John; HARGREAVES, Anne. The kings & queens of Britain. [s.l.]: Oxford University Press, 2009. 404 s. Dostupné online. ISBN 0-19-955922-8. S. 33. (anglicky)