Frederick I (2000). The Crusade of Frederick Barbarossa: The History of the Expedition of the Emperor Frederick and related texts (İngilizce). Loud, G.A. tarafından çevrildi. Ashgate Publishing.
Marina, Areli (2013). "The Langobard Revival of Matteo il Magno Visconti, Lord of Milan". I Tatti Studies in the Italian Renaissance (İngilizce). Cilt Vol. 16, No. 1/2 September. University of Chicago Press.
Ziegler, W. (2008). König Konrad III. (1138–1152). Hof, Urkunden und Politik (= Forschungen zur Kaiser- und Papstgeschichte des Mittelalters. Band 26) (Almanca). Viyana: Böhlau.
Baldwin, M. W. (1969). A History of the Crusades: the first hundred years (İngilizce).