@misc{Krüger_Piotr_(1580-1639)_Petri,
 author={Krüger, Piotr (1580-1639)},
 howpublished={online},
 publisher={Andrzej Hünefeld},
 language={lat},
 title={Petri Crügeri Mathematici Dantiscani Doctrina Astronomiæ Sphærica : Præceptis methodicis & perspicuis, per Globum, Tabulas, Trigonometriam, tam Veterem quam Logarithmicam, explicata ac demonstrata, Cum Tabulis Ad Eam Pertinentibus},
 type={starodruk},
 keywords={astronomia, astronomia sferyczna, logarytmy, metodologia, rysunki i plany, tablice astronomiczne, tablice logarytmiczne},
}