Robert van Torigni, Chronica s.a. 1165 (= G.H. Pertz (ed.), Monumenta Germaniae Historica, Scriptores, VI, Hannover, 1844, p. 514[dode link]), Radulfus de Diceto, Ymagines Historiarum s.a. 1165 (= W. Stubbs (ed.), Radulfi de Diceto decani Lundoniensis opera historica, I, Londen, 1876, p. 270).
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Robert van Torigni, Chronica s.a. 1165 (= G.H. Pertz (ed.), Monumenta Germaniae Historica, Scriptores, VI, Hannover, 1844, p. 514[dode link]), Radulfus de Diceto, Ymagines Historiarum s.a. 1165 (= W. Stubbs (ed.), Radulfi de Diceto decani Lundoniensis opera historica, I, Londen, 1876, p. 270).
T. Asbridge, Talking to the enemy: the role and purpose of negotiations between Saladin and Richard the Lionheart during the Third Crusade, in Journal of Medieval History 39 (2013), p. 282. Vgl. M. Billings, De kruistochten: Op oorlogspad in het Heilige Land, Amsterdam, 2006, pp. 110-111.
