Markus Mösslang, Sabine Freitag, Peter Wende, British Envoys to Germany 1816-1866, Tập 2; Tập 1830-1847, Cambridge University Press, 2003, tr. 550
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Walter A. Goffart, The narrators of barbarian history (A.D. 550–800): Jordanes, Gregory of Tours, Bede, and Paul the Deacon (Princeton U.P. 1988) on line edition
