@misc{_Directorium,
 address={Varsaviae},
 howpublished={online},
 publisher={Stanislai Niemiera},
 language={lat},
 type={czasopismo},
 title={Directorium seu Ordo Divini Officii Recitandi, Sacrique Peragendi Juxta Ritum Brfviarii ac Missalis Romani ad Usum Dioeceseos Plocensis ..},
}