Romania was an unofficial popular name of the eastern Roman Empire (used also in the west), but the Latin Emperors have officially used the title "Emperor of Romania" (imperator Romaniae), instead of "Emperor of the Romans" (imperator Romanorum) which was used by the Roman emperors until 1453 (the west reserved this title only to the rulers of the German Holy Roman Empire). Ancient coin collectingISBN978-0-87349-515-8
Komnene 1928, Alexiad, 10.261. Komnene, Anna (1928). "Books X–XIII". The Alexiad (translated by Elizabeth A.S. Dawes). Internet Medieval Sourcebook. Archived from the original on 13 April 2020. Retrieved 18 May 2007.
Komnene 1928, Alexiad, 11.291Komnene, Anna (1928). "Books X–XIII". The Alexiad (translated by Elizabeth A.S. Dawes). Internet Medieval Sourcebook. Archived from the original on 13 April 2020. Retrieved 18 May 2007.
Choniates 1912, The Sack of Constantinople. Choniates, Nicetas (1912). "The Sack of Constantinople (1204)". Translations and Reprints from the Original Sources of European History by D.C. Munro (Series 1, Vol 3:1). Philadelphia: University of Pennsylvania Press. pp. 15–16.
Komnene 1928, Alexiad, 10.261. Komnene, Anna (1928). "Books X–XIII". The Alexiad (translated by Elizabeth A.S. Dawes). Internet Medieval Sourcebook. Archived from the original on 13 April 2020. Retrieved 18 May 2007.
Komnene 1928, Alexiad, 11.291Komnene, Anna (1928). "Books X–XIII". The Alexiad (translated by Elizabeth A.S. Dawes). Internet Medieval Sourcebook. Archived from the original on 13 April 2020. Retrieved 18 May 2007.