@misc{_Scala,
 address={Sewilla},
 howpublished={online},
 publisher={Ungut, Meinhard (14..-1499). Druk.},
 publisher={Stanislaus Polonus (ca 1446-1514). Druk},
 language={spa},
 type={inkunabuł},
 title={Scala caeli},
}