@misc{Opaliński_Łukasz_(1612-1662)_Polonia_1648,
 author={Opaliński, Łukasz (1612-1662)},
 title={Polonia Defensa Contra Ioann. Barclaivm, Vbi, occasione ista, de Regno Genteque Polona multa narrantur, hactenus litteris non tradita},
 address={Dantisci},
 year={1648},
 language={lat},
 type={starodruk},
 publisher={Sumptibus Georgii Försteri [...]},
 keywords={Stare druki},
}