Coba jelasin Lihat pula dari Sejarah Roma dong

Lini masa sejarah bangsa Romawi

Döge, F.U. (2004) "Die militärische und innenpolitische Entwicklung in Italien 1943–1944", Chapter 11, in:Pro- und antifaschistischer Neorealismus. PhD Thesis, Free University, Berlin. 960 halaman [dalam bahasa Jerman]

Ekonomou, Andrew J. 2007. Byzantine Rome and the Greek Popes: Eastern influences on Rome and the papacy from Gregory the Great to Zacharias, A.D. 590–752. Lexington Books.

Gregorovius, Ferdinand. History of the City of Rome in the Middle Ages.

Theodor Mommsen The History of Rome, Books I, II, III, IV, V. Atribusi

Römische Geschichte, dalam bahasa Jerman