PENTEK, Zdzisław. 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, [S. l.], v. 13, p. 274, 2003. DOI: 10.14746/bp.2003.13.24. Disponível em: https://pressto.amu.edu.pl/index.php/bp/article/view/52518. Acesso em: 5 aug. 2026.