[d] Agobardus, Works (edited by Baluze).

[e] Johann G. A. Wirth, Geschichte der deutschen Staaten.

[f] M. E. Thalheimer, Mediæval and Modern History.

Chapter VII. The Birth of German Nationality

[b] Friedrich Wilhelm Benjamin von Giesebrecht, op. cit.

[c] Annales Fuldenses.

[d] Heinrich Gerdes, Geschichte des Deutschen Volkes.

[e] Wolfgang Menzel, History of Germany from the Earliest Period to the Present Time (translated from the German by G. Horrocks).

[f] Wittekind, Res gestæ Saxonicæ.

Chapter VIII. Otto the Great and his Successors