Pentek, Zdzisław. 2003. “Donald E. Queller, Thomas F. Madden, The Fourth Crusade. The Conquest of Constani- Nople. Second Edition. With an Essav on Primary Sources by Alfred J. Andrea, Univer Sity of Pennsylvania Press, Philadelphia 1997, S. 357+7 nlb., Mapy”. Balcanica Posnaniensia. Acta Et Studia 13 (July):274. https://doi.org/10.14746/bp.2003.13.24.