@misc{_De,
 address={Lipsiensium},
 address={Thoruni},
 howpublished={online},
 publisher={Sumptibus Societatis Copernicanae},
 publisher={Typis Breitkopfii et Haertelii},
 language={lat},
 type={książka},
 title={De revolutionibus orbium coelestium, libri VI},
 title={Nicolai Copernici Torunensis De revolutionibus orbium coelestium, libri VI Accedit Georgii Ioachimi Rhetici de libris revolutionum Narratio prima.},
}