@misc{Wróbel_Walenty_Propugnaculum,
 author={Wróbel, Walenty},
 address={Lipsiae},
 howpublished={online},
 publisher={Impressit Melchior Lotter[us]},
 language={lat},
 type={starodruk},
 title={Propugnaculum ecclesiae : advers[us] uarias Sectas huius te[m]pestatis},
 keywords={Polska -- 16 w., Early printed books -- 16th century, Sixteenth century},
}