Saya mau tau Sumber dari Kerajaan Jerusalem. Jelaskan dalam bahasa melayu

Fulcher of Chartres, A History of the Expedition to Jerusalem, 1095–1127, trans. Frances Rita Ryan. University of Tennessee Press, 1969.

William of Tyre, A History of Deeds Done Beyond the Sea, trans. E.A. Babcock and A.C. Krey. Columbia University Press, 1943.

Philip K. Hitti, trans., An Arab-Syrian Gentleman and Warrior in the Period of the Crusades; Memoirs of Usamah ibn-Munqidh (Kitab al i'tibar). New York, 1929