- Mills, C. 1844. The History of the Crusades: For the Recovery and Possession of the Holy Land. Lea & Blanchard, p. 97. No ISBN.
- Michaud, J.F. 1852. History of the Crusades. Translated by William Robson p. 287. No ISBN.
- Archer, T.A., Kingsford, C.L. and H.E. Watts. 1894. The Story of the Crusades. Putnam, pp. 133, 155-158. No ISBN.
- Riley-Smith, Jonathan (October 1983). „The Motives of the Earliest Crusaders and the Settlement of Latin Palestine, 1095-1100“. The English Historical Review. Oxford University Press. 98 (389): 721–736. doi:10.1093/ehr/xcviii.ccclxxxix.721. JSTOR 567757.