@misc{Opaliński_Łukasz_(1612-1662)_Polonia,
 author={Opaliński, Łukasz (1612-1662)},
 howpublished={online},
 publisher={Dantisci sumptibus Georgii Försteri S.R.M. bibliopolae},
 language={lat},
 title={Polonia defensa contra Ioan. Barclaium, ubi, occasione ista, de regno genteque Polona multa narrantur, hactenus litteris non tradita.},
 type={starodruk},
}