Andrea, A. J. (2000). Contemporary sources for the Fourth Crusade: Vol. Medieval Mediterranean. Brill.
Angold, M. (n.d.). The road to 1204: the Byzantine background to the Fourth Crusade. Journal of Medieval History, 25(3), 257–278. http://ezproxy.lib.gla.ac.uk/login?url=http://www-tandfonline-com/doi/full/10.1016/S1304-4184%2899%2900003-2
Angold, M. (2003). The Fourth Crusade: event and context: Vol. The medieval world. Longman.
Bartlett, W. B. (2000). An ungodly war: the sack of Constantinople & the Fourth Crusade. Sutton Publishing.
Bull, M. G., & Housley, N. (2003). The experience of crusading: Vol. 1: Western approaches. Cambridge University Press.
Choniates, N., & Magoulias, H. J. (1984). O city of Byzantium: Annals of Niketas Choniatēs: Vol. Byzantine texts in translation. Wayne State University Press.
Clari, R. de, McNeal, E. H., & American Council of Learned Societies. (1969). The conquest of Constantinople: Vol. [no. 23] [Electronic resource]. W.W. Norton. https://ezproxy.lib.gla.ac.uk/login?url=https://hdl.handle.net/2027/heb.05986
Gunther, & Andrea, A. J. (1997). The capture of Constantinople: the Hystoria Constantinopolitana of Gunther of Pairis [Electronic resource]. University of Pennsylvania Press. https://ebookcentral.proquest.com/lib/gla/detail.action?docID=3441529
Harris, J. (2004). The Debate on the Fourth Crusade. History Compass, 2(1), **-**. https://doi.org/10.1111/j.1478-0542.2004.00114.x
Hazard, H. W., Wolff, R. L., & University of Wisconsin-Madison. Libraries. (1969). The later Crusades, 1189-1311: Vol. A history of the Crusades (2nd ed) [Electronic resource]. University of Wisconsin Press. https://digital.library.wisc.edu/1711.dl/History.CrusTwo
Internet History Sourcebooks Project. (n.d.). http://readinglists.glasgow.ac.uk/items/A2496854-8EDE-6FAD-E647-9A2174E95869
Joinville, J., Villehardouin, G. de, & Shaw, M. R. B. (1963). Chronicles of the Crusades: Vol. Penguin classics. Penguin Books.
Madden, T. F. (1995). Outside and Inside the Fourth Crusade. The International History Review, 17(4), 726–743. https://ezproxy.lib.gla.ac.uk/login?url=https://www.jstor.org/stable/40107441
Medieval Sourcebook: Villehardouin: Memoirs or Chronicle of The Fourth Crusade and The Conquest of Constantinople. (n.d.). https://sourcebooks.fordham.edu/basis/villehardouin.asp
Noble, P. (2001). The importance of Old French chronicles as historical sources of the Fourth Crusade and the early Latin Empire of Constantinople. Journal of Medieval History, 27(4), 399–416. https://doi.org/10.1016/S0304-4181(01)00018-5
Phillips, J. (2004). The Fourth Crusade and the sack of Constantinople. Jonathan Cape.
Queller, D. E., & Madden, T. F. (1997). The Fourth Crusade: the conquest of Constantinople: Vol. Middle Ages series (2nd ed). University of Pennsylvania Press.
Ridyard, S. J. & Sewanee Mediaeval Colloquium. (2004). The medieval crusade: Vol. Sewanee mediaeval studies. Boydell Press.
Shepard, J. (Ed.). (2009). The Cambridge History of the Byzantine Empire c500-1492. Cambridge University Press. https://ezproxy.lib.gla.ac.uk/login?url=https://dx.doi.org/10.1017/CHOL9780521832311
Tricht, F. van. (2011). The Latin renovatio of Byzantium: the Empire of Constantinople (1204-1228): Vol. The medieval Mediterranean : peoples, economies, and cultures, 400-1500. Brill. https://ebookcentral.proquest.com/lib/gla/detail.action?docID=737788
Wolff, R. L. (1949). The `Second Bulgarian Empire.’ Its Origin and History to 1204. Speculum, 24(2), 167–206. https://doi.org/10.2307/2848560