@book{cbdu17400,
           title = {A true report of the taking of the town and castell of Polotzko by the king of Poland},
         address = {[London]},
          number = {1740},
             url = {http://cbdu.ijp.pan.pl/id/eprint/17400/},
        abstract = {Relacja o zdobyciu przez Stefana Batorego Po{\l}ocka.}
}