@misc{Keckermann_Bartłomiej_(ca_1572-1609)._Systematis,
 author={Keckermann, Bartłomiej (ca 1572-1609).},
 howpublished={online},
 publisher={Apud Guilielmum Antonium},
 language={lat},
 title={Systematis Logici Plenioris Pars Altera : Quae est Specialis; continens usum et Exercitationem artis Logicae antehac Gymnasium Logicvm appellata; nunc recognita et varie aucta},
 type={stary druk},
}