@misc{Erler_Georg_Die,
 author={Erler, Georg},
 howpublished={online},
 publisher={Duncker & Humblot},
 language={ger},
 title={Die Matrikel der Albertus-Universität zu Königsberg i Pr. Bd. 3},
 type={książka},
 keywords={Uniwersytet Albertyna w Królewcu},
}