@misc{Oehler_Max_Geschichte,
 author={Oehler, Max},
 howpublished={online},
 publisher={E. Wernichs Buchdruckerei},
 language={ger},
 title={Geschichte des Deutsche Ritter-Ordens},
 type={książka},
 keywords={Prusy - historia, Zakon Krzyżacki - historia},
}