HISTORY of the USSR. (1977). History of the Ussr. Progress pub..
Cita Chicago Style (17a ed.)HISTORY of the USSR. History of the Ussr. Moscow: Progress pub., 1977.
Cita MLA (9a ed.)HISTORY of the USSR. History of the Ussr. Progress pub., 1977.
Precaución: Estas citas no son 100% exactas.