The Humbled Generation - Byzantines and the Fourth Crusade

• Samuel Pablo Müller, Latins in Roman (Byzantine) Histories, Ambivalent Representations in the Long Twelfth Century (2022)
• R.I. Moore, The Formation of a Persecuting Society: Authority and Deviance in Western 
  Europe 950-1250 (2005)
• Michael Angold, Church and Society in Byzantium under the Comneni, 1081-1261 (2000)

You should be able to gain free access to the books and articles listed above through your school or local county library service.