Van Cleve, Thomas C. (1977). "Chapter X. The Fifth CrusadeArchived 2023-03-26 at the Wayback Machine". In Wolff, Robert L. and Hazard, H. W. (eds.). A History of the Crusades: Volume II, The Later Crusades 1187-1311. Madison: The University of Wisconsin Press. pp. 343-376.
Van Cleve, Thomas C. (1977). "Chapter XI. The Crusade of Frederick IIArchived 2024-01-13 at the Wayback Machine". In Wolff, Robert L. and Hazard, H. W. (eds.). A History of the Crusades: Volume II, The Later Crusades 1187-1311. Madison: The University of Wisconsin Press. pp. 377-448.
Hardwicke, Mary Nickerson (1969). "The Crusader States, 1192–1243". In Setton, Kenneth M.; Wolff, Robert Lee; Hazard, Harry (eds.). A History of the Crusades, Volume II: The Later Crusades, 1189–1311. The University of Wisconsin Press. pp. 522–554.
Van Cleve, Thomas C. (1977). "Chapter X. The Fifth CrusadeArchived 2023-03-26 at the Wayback Machine". In Wolff, Robert L. and Hazard, H. W. (eds.). A History of the Crusades: Volume II, The Later Crusades 1187-1311. Madison: The University of Wisconsin Press. pp. 343-376.
Van Cleve, Thomas C. (1977). "Chapter XI. The Crusade of Frederick IIArchived 2024-01-13 at the Wayback Machine". In Wolff, Robert L. and Hazard, H. W. (eds.). A History of the Crusades: Volume II, The Later Crusades 1187-1311. Madison: The University of Wisconsin Press. pp. 377-448.