@misc{Geelhaar_Kaspar_(1631-1678)_Gymnasii,
 author={Geelhaar, Kaspar (1631-1678)},
 howpublished={online},
 publisher={Dantisci},
 publisher={Typis Viduæ Georgii Rhetii},
 language={lat},
 type={stary druk},
 title={Gymnasii Ethici Exercitatio II. : De Felicitate Morali Qvam Præside Henrico Nicolai [...]},
}