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Angold M. 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
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Harris J. The Debate on the Fourth Crusade. History Compass. 2004;2(1):**-**. doi:10.1111/j.1478-0542.2004.00114.x
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Madden TF. Outside and Inside the Fourth Crusade. The International History Review. 1995;17(4):726-743. https://ezproxy.lib.gla.ac.uk/login?url=https://www.jstor.org/stable/40107441
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Noble P. The importance of Old French chronicles as historical sources of the Fourth Crusade and the early Latin Empire of Constantinople. Journal of Medieval History. 2001;27(4):399-416. doi:10.1016/S0304-4181(01)00018-5
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Hazard HW, Wolff RL, University of Wisconsin-Madison. Libraries. The Later Crusades, 1189-1311. Vol A history of the Crusades. 2nd ed. University of Wisconsin Press; 1969. https://digital.library.wisc.edu/1711.dl/History.CrusTwo
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Joinville J, Villehardouin G de, Shaw MRB. Chronicles of the Crusades. Vol Penguin classics. Penguin Books; 1963.
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Medieval Sourcebook: Villehardouin: Memoirs or Chronicle of The Fourth Crusade and The Conquest of Constantinople. https://sourcebooks.fordham.edu/basis/villehardouin.asp
8.
Gunther, Andrea AJ. The Capture of Constantinople: The Hystoria Constantinopolitana of Gunther of Pairis. University of Pennsylvania Press; 1997. https://ebookcentral.proquest.com/lib/gla/detail.action?docID=3441529
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Choniates N, Magoulias HJ. O City of Byzantium: Annals of Niketas Choniatēs. Vol Byzantine texts in translation. Wayne State University Press; 1984.
10.
Clari R de, McNeal EH, American Council of Learned Societies. The Conquest of Constantinople. Vol [no. 23]. W.W. Norton; 1969. https://ezproxy.lib.gla.ac.uk/login?url=https://hdl.handle.net/2027/heb.05986
11.
Andrea AJ. Contemporary Sources for the Fourth Crusade. Vol Medieval Mediterranean. Brill; 2000.
12.
Ridyard SJ, Sewanee Mediaeval Colloquium. The Medieval Crusade. Vol Sewanee mediaeval studies. Boydell Press; 2004.
13.
Angold M. The Fourth Crusade: Event and Context. Vol The medieval world. Longman; 2003.
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Bartlett WB. An Ungodly War: The Sack of Constantinople & the Fourth Crusade. Sutton Publishing; 2000.
15.
Shepard J, ed. The Cambridge History of the Byzantine Empire C500-1492. Cambridge University Press; 2009. https://ezproxy.lib.gla.ac.uk/login?url=https://dx.doi.org/10.1017/CHOL9780521832311
16.
Phillips J. The Fourth Crusade and the Sack of Constantinople. Jonathan Cape; 2004.
17.
Bull MG, Housley N. The Experience of Crusading: Vol. 1: Western Approaches. Cambridge University Press; 2003.
18.
Queller DE, Madden TF. The Fourth Crusade: The Conquest of Constantinople. Vol Middle Ages series. 2nd ed. University of Pennsylvania Press; 1997.
19.
Tricht F van. The Latin Renovatio of Byzantium: The Empire of Constantinople (1204-1228). Vol The medieval Mediterranean : peoples, economies, and cultures, 400-1500. Brill; 2011. https://ebookcentral.proquest.com/lib/gla/detail.action?docID=737788
20.
Wolff RL. The `Second Bulgarian Empire.’ Its Origin and History to 1204. Speculum. 1949;24(2):167-206. doi:10.2307/2848560
21.
Internet History Sourcebooks Project. http://readinglists.glasgow.ac.uk/items/A2496854-8EDE-6FAD-E647-9A2174E95869
