@misc{_Directorium, howpublished={online}, publisher={Samuel BogumiƂ Presser}, language={lat}, type={czasopismo starodruczne}, title={Directorium Divini Officii ac Missarum Juxta Rubricas Generales Breviarij & Missalis Romani, necnon Decreta S. R. C. pro Dioecesi Posnaniensi in Annum Domini 1798}, }