Jabarkan Lihat pula dari Sejarah Roma

Lini masa sejarah bangsa Romawi

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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