Jelaskan Daftar pustaka dari Kaloyan dari Bulgaria

George Akropolites: The History (Translated with and Introduction and Commentary by Ruth Macrides) (2007). Oxford University Press. .

O City of Byzantium, Annals of Niketas Choniatēs (Translated by Harry J. Magoulias) (1984). Wayne State University Press. .

The Conquest of Constantinople: Robert of Clari (Translated with introduction and notes by Edgar Holmes McNeal) (1996). Columbia University Press. .