Schapiro, Leonard 1908-1983.
The origin of the communist autocracy: political opposition in the Soviet state : first phase, 1917-1922 /
Leonard Schapiro 
. - New York : Washington : Frederick A. Praeger, Publishers,  1965 
. - xvii, 397 p.  20 cm. 
<br/>К.: Бібліогр. : c. 369-387, index