@misc{Perlbach_Max_(1848-1921)_Die,
 author={Perlbach, Max (1848-1921)},
 address={Königsberg},
 howpublished={online},
 publisher={Albert Rosbach},
 language={ger},
 title={Die älteren Urkunden der Wallenrodt'schen Bibliothek in Königsberg},
 type={broszura},
}