@Article{403382,
     author = "Grzegorz Mazurkiewicz",
     title = "Education in crisis? : task and development of educational leaders",
     year =  2013,
     volume =  14,
     number =  13 (2),
     journal =  Przedsiębiorczość i Zarządzanie,
     pages =  s. 41-51,
    }