@misc{_Directorium,
 howpublished={online},
 publisher={Typographia Presseriana},
 language={lat},
 type={czasopismo starodruczne},
 title={Directorium Divini Officii ac Missarum Juxta Rubricas Generales Breviarii & Missalis Romani nec non Decreta S. R. C. ad usum Almæ Ecclesiæ Metropolitanæ & Archidiæcesis Gnesnensis Accommodatum pro Anno Domini 1797},
}