@misc{Natan_Spira_Megale,
 author={Natan Spira},
 howpublished={online},
 publisher={M.F. Poremba – Michael F. Poremba},
 language={heb},
 title={Megale amukot, מגלה עמוקות},
 type={książka},
 keywords={Biblioteka Jeszywas Chachmej Lublin},
}