Sulzbachlı Bertha: Revizyonlar arasındaki fark

{{Kaynakça}}

 

* [[Otto of Freising]], ''Deeds of Frederick Barbarossa''

* [[Nikitas Honiatis|Niketas Choniatēs]], ''Historia'', ed. J.-L. Van Dieten, 2 vols., Berlin and New York, 1975; trans. as ''O City of Byzantium, Annals of Niketas Choniates'', by H.J. Magoulias, Detroit; Wayne State University Press, 1984.