@misc{_De,
 address={Varsaviae},
 howpublished={online},
 publisher={Gebethner i Wolff},
 language={ger},
 type={książka},
 title={De rebus ac statu ducatus Prussiae tempore Alberti Senioris marchionis Brandenburgensis, illo vero mortuo Alberti Junioris ducis Prussiae an. 1566-1568 commentarii commissariorum Sigismundi Augusti Regis},
 keywords={źródła},
}