@misc{_Codex,
 address={Mainz},
 address={Leipzig},
 address={Braunsberg},
 howpublished={online},
 language={ger},
 language={lat},
 type={książka},
 title={Codex diplomaticus Warmiensis oder Regesten und Urkunden zur Geschichte Ermlands. Bd. 1-4},
 keywords={źródła},
}