Jóźwiak, S. (2017) “Karol Polejowski, Matrimonium et crux. Wzrost i kariera rodu de Brienne w czasie wypraw krzyżowych (do początku XIV wieku) [Matrimonium et crux. The rise and career of the Brienne family during the Crusades (until the beginning of the 14th century)]”, Ordines Militares Colloquia Torunensia Historica. Yearbook for the Study of the Military Orders, 22, pp. 313–315. doi: 10.12775/OM.2017.010.