@misc{Ricoldo_da_Monte_Croce_(1242?-1320)_Improbatio,
 author={Ricoldo da Monte Croce (1242?-1320)},
 address={Sewilla},
 howpublished={online},
 publisher={Stanislaus Polonus (ca 1446-1514). Druk.},
 language={lat},
 type={inkunabuł},
 title={Improbatio Alcorani},
}