Gaecky, George.
The Cossacks in the Thirty Years War /
George Gajecky, Alexander Baran 
. - Rome : PP. Basiliani,  1969- 
. - 2 v.  24 cm. 
 - (Analecta OSBM = Записки ЧСВВ  ser. 2 ; sect. 1  Opera = Works  ; v. 24 ; 42 )
<br/> V. 1. 1619-1624  <br/>  V. 2. 1625-1648. <br/>