Westwood, J. (1980). Russia since 1917. St. Martin's.
Lua i Stíl Chicago (17ú heag.)Westwood, J.N. Russia Since 1917. New York: St. Martin's, 1980.
Lua MLA (9ú heag.)Westwood, J.N. Russia Since 1917. St. Martin's, 1980.
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