Coba jelasin Catatan dari István III dari Hungaria dong

Deeds of John and Manuel Comnenus by John Kinnamos (Translated by Charles M. Brand) (1976). Columbia University Press. ISBN 0-231-04080-6.

O City of Byzantium, Annals of Niketas Choniatēs (Translated by Harry J. Magoulias) (1984). Wayne State University Press. ISBN 978-0-8143-1764-8.

The Deeds of Frederick Barbarossa by Otto of Freising and his Continuator, Rahewin (Translated and annotated with an introduction by Charles Christopher Mierow with the collaboration of Richard Emery) (2004). Columbia University Press. ISBN 0-231-13419-3.