La Monte and Hubert, The Wars of Frederick II, 89.
503
Huillard-Bréholles, J. L. A., Historia diplomatica Friderici Secundi III (Paris: 1852), 135–40; в переводе на английский (процитированном здесь) см.: Peters, E. (ed.), Christian Society and the Crusades 1198–1229: Sources in Translation including the Capture of Damietta by Oliver of Paderborn (Philadelphia: 1948), 165–70.
