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Lua i Stíl Chicago (17ú heag.)Grigorenko, Pyotr. Communism Versus Stalinism. London: International Marxist Group, 1968.
Lua MLA (8ú heag.)Grigorenko, Pyotr. Communism Versus Stalinism. International Marxist Group, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.