@misc{Erdtmann_David_(1631-1696)_Gymnasii,
 author={Erdtmann, David (1631-1696)},
 howpublished={online},
 publisher={Dantisci},
 publisher={Typis Viduæ Georgii Rhetii},
 language={lat},
 type={stary druk},
 title={Gymnasii Ethici Exercitatio VIII. : De Fortitudine. Qvam Præside Henrico Nicolai [...]},
}